Home / 1,216,037,389.78-1,678,134,070.68-659,120,814.10

Finding the Fourth Proportional to 1,216,037,389.78, 1,678,134,070.68 and 659,120,814.10

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Solution

The fourth proportional to 1,216,037,389.78, 1,678,134,070.68 and 659,120,814.10 is: 909,588,063.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,037,389.78 : 1,678,134,070.68 = 659,120,814.10 : x
  2. Step 2: Convert to fraction form
    1,216,037,389.78/1,678,134,070.68 = 659,120,814.10/x
  3. Step 3: Cross multiply
    1,216,037,389.78x = 1,678,134,070.68 × 659,120,814.10
  4. Step 4: Simplify right side
    1,216,037,389.78x = 1,106,093,094,835,548,672
  5. Step 5: Solve for x
    x = 1,106,093,094,835,548,672/1,216,037,389.78
  6. Step 6: Final answer
    x = 909,588,063.76

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.