Home / 431,072,257.59-647,017,182.86-266,813,146.53

Finding the Fourth Proportional to 431,072,257.59, 647,017,182.86 and 266,813,146.53

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Solution

The fourth proportional to 431,072,257.59, 647,017,182.86 and 266,813,146.53 is: 400,472,745.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,072,257.59 : 647,017,182.86 = 266,813,146.53 : x
  2. Step 2: Convert to fraction form
    431,072,257.59/647,017,182.86 = 266,813,146.53/x
  3. Step 3: Cross multiply
    431,072,257.59x = 647,017,182.86 × 266,813,146.53
  4. Step 4: Simplify right side
    431,072,257.59x = 172,632,690,416,518,912
  5. Step 5: Solve for x
    x = 172,632,690,416,518,912/431,072,257.59
  6. Step 6: Final answer
    x = 400,472,745.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.