Home / 1,216,037,394.46-1,678,134,077.13-659,120,818.78

Finding the Fourth Proportional to 1,216,037,394.46, 1,678,134,077.13 and 659,120,818.78

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Solution

The fourth proportional to 1,216,037,394.46, 1,678,134,077.13 and 659,120,818.78 is: 909,588,070.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,037,394.46 : 1,678,134,077.13 = 659,120,818.78 : x
  2. Step 2: Convert to fraction form
    1,216,037,394.46/1,678,134,077.13 = 659,120,818.78/x
  3. Step 3: Cross multiply
    1,216,037,394.46x = 1,678,134,077.13 × 659,120,818.78
  4. Step 4: Simplify right side
    1,216,037,394.46x = 1,106,093,106,940,545,280
  5. Step 5: Solve for x
    x = 1,106,093,106,940,545,280/1,216,037,394.46
  6. Step 6: Final answer
    x = 909,588,070.22

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Double scale
Find fourth proportional to 1,216,037,395.46, 1,678,134,078.51 and 659,120,819.78
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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.