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Finding the Fourth Proportional to 518,792.28, 715,944.30 and 292,437.72

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Solution

The fourth proportional to 518,792.28, 715,944.30 and 292,437.72 is: 403,570.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,792.28 : 715,944.30 = 292,437.72 : x
  2. Step 2: Convert to fraction form
    518,792.28/715,944.30 = 292,437.72/x
  3. Step 3: Cross multiply
    518,792.28x = 715,944.30 × 292,437.72
  4. Step 4: Simplify right side
    518,792.28x = 209,369,118,739.00
  5. Step 5: Solve for x
    x = 209,369,118,739.00/518,792.28
  6. Step 6: Final answer
    x = 403,570.23

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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.