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Finding the Fourth Proportional to 518,458.39, 715,122.50 and 450,356.74

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Solution

The fourth proportional to 518,458.39, 715,122.50 and 450,356.74 is: 621,188.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,458.39 : 715,122.50 = 450,356.74 : x
  2. Step 2: Convert to fraction form
    518,458.39/715,122.50 = 450,356.74/x
  3. Step 3: Cross multiply
    518,458.39x = 715,122.50 × 450,356.74
  4. Step 4: Simplify right side
    518,458.39x = 322,060,233,761.06
  5. Step 5: Solve for x
    x = 322,060,233,761.06/518,458.39
  6. Step 6: Final answer
    x = 621,188.20

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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.