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Finding the Fourth Proportional to 487,185.92, 671,704.80 and 372,605.12

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Solution

The fourth proportional to 487,185.92, 671,704.80 and 372,605.12 is: 513,727.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,185.92 : 671,704.80 = 372,605.12 : x
  2. Step 2: Convert to fraction form
    487,185.92/671,704.80 = 372,605.12/x
  3. Step 3: Cross multiply
    487,185.92x = 671,704.80 × 372,605.12
  4. Step 4: Simplify right side
    487,185.92x = 250,280,647,608.58
  5. Step 5: Solve for x
    x = 250,280,647,608.58/487,185.92
  6. Step 6: Final answer
    x = 513,727.18

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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.