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Finding the Fourth Proportional to 518,045.76, 714,892.30 and 288,602.73

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Solution

The fourth proportional to 518,045.76, 714,892.30 and 288,602.73 is: 398,265.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,045.76 : 714,892.30 = 288,602.73 : x
  2. Step 2: Convert to fraction form
    518,045.76/714,892.30 = 288,602.73/x
  3. Step 3: Cross multiply
    518,045.76x = 714,892.30 × 288,602.73
  4. Step 4: Simplify right side
    518,045.76x = 206,319,868,714.47
  5. Step 5: Solve for x
    x = 206,319,868,714.47/518,045.76
  6. Step 6: Final answer
    x = 398,265.72

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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.