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Finding the Fourth Proportional to 518,387.67, 715,652.51 and 363,814.61

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Solution

The fourth proportional to 518,387.67, 715,652.51 and 363,814.61 is: 502,258.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,387.67 : 715,652.51 = 363,814.61 : x
  2. Step 2: Convert to fraction form
    518,387.67/715,652.51 = 363,814.61/x
  3. Step 3: Cross multiply
    518,387.67x = 715,652.51 × 363,814.61
  4. Step 4: Simplify right side
    518,387.67x = 260,364,833,423.84
  5. Step 5: Solve for x
    x = 260,364,833,423.84/518,387.67
  6. Step 6: Final answer
    x = 502,258.92

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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.