Home / 718,715,542.14-991,837,084.86-405,448,787.34

Finding the Fourth Proportional to 718,715,542.14, 991,837,084.86 and 405,448,787.34

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Solution

The fourth proportional to 718,715,542.14, 991,837,084.86 and 405,448,787.34 is: 559,524,762.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,715,542.14 : 991,837,084.86 = 405,448,787.34 : x
  2. Step 2: Convert to fraction form
    718,715,542.14/991,837,084.86 = 405,448,787.34/x
  3. Step 3: Cross multiply
    718,715,542.14x = 991,837,084.86 × 405,448,787.34
  4. Step 4: Simplify right side
    718,715,542.14x = 402,139,143,295,327,680
  5. Step 5: Solve for x
    x = 402,139,143,295,327,680/718,715,542.14
  6. Step 6: Final answer
    x = 559,524,762.88

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Double scale
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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.