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Finding the Fourth Proportional to 518,809.92, 777,981.60 and 502,480.32

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Solution

The fourth proportional to 518,809.92, 777,981.60 and 502,480.32 is: 753,494.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,809.92 : 777,981.60 = 502,480.32 : x
  2. Step 2: Convert to fraction form
    518,809.92/777,981.60 = 502,480.32/x
  3. Step 3: Cross multiply
    518,809.92x = 777,981.60 × 502,480.32
  4. Step 4: Simplify right side
    518,809.92x = 390,920,443,322.11
  5. Step 5: Solve for x
    x = 390,920,443,322.11/518,809.92
  6. Step 6: Final answer
    x = 753,494.54

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1.5x scale

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.