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Finding the Fourth Proportional to 497,649.58, 686,539.65 and 316,264.30

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Solution

The fourth proportional to 497,649.58, 686,539.65 and 316,264.30 is: 436,306.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,649.58 : 686,539.65 = 316,264.30 : x
  2. Step 2: Convert to fraction form
    497,649.58/686,539.65 = 316,264.30/x
  3. Step 3: Cross multiply
    497,649.58x = 686,539.65 × 316,264.30
  4. Step 4: Simplify right side
    497,649.58x = 217,127,981,829.50
  5. Step 5: Solve for x
    x = 217,127,981,829.50/497,649.58
  6. Step 6: Final answer
    x = 436,306.97

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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.