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Finding the Fourth Proportional to 518,808.92, 777,980.10 and 502,479.32

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Solution

The fourth proportional to 518,808.92, 777,980.10 and 502,479.32 is: 753,493.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,808.92 : 777,980.10 = 502,479.32 : x
  2. Step 2: Convert to fraction form
    518,808.92/777,980.10 = 502,479.32/x
  3. Step 3: Cross multiply
    518,808.92x = 777,980.10 × 502,479.32
  4. Step 4: Simplify right side
    518,808.92x = 390,918,911,621.53
  5. Step 5: Solve for x
    x = 390,918,911,621.53/518,808.92
  6. Step 6: Final answer
    x = 753,493.04

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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.