Home / 1,216,037,393.46-1,678,134,075.75-659,120,817.78

Finding the Fourth Proportional to 1,216,037,393.46, 1,678,134,075.75 and 659,120,817.78

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Solution

The fourth proportional to 1,216,037,393.46, 1,678,134,075.75 and 659,120,817.78 is: 909,588,068.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,037,393.46 : 1,678,134,075.75 = 659,120,817.78 : x
  2. Step 2: Convert to fraction form
    1,216,037,393.46/1,678,134,075.75 = 659,120,817.78/x
  3. Step 3: Cross multiply
    1,216,037,393.46x = 1,678,134,075.75 × 659,120,817.78
  4. Step 4: Simplify right side
    1,216,037,393.46x = 1,106,093,104,352,824,448
  5. Step 5: Solve for x
    x = 1,106,093,104,352,824,448/1,216,037,393.46
  6. Step 6: Final answer
    x = 909,588,068.84

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Double scale
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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.