Home / 642,967.60-887,316.24-356,514.40

Finding the Fourth Proportional to 642,967.60, 887,316.24 and 356,514.40

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Solution

The fourth proportional to 642,967.60, 887,316.24 and 356,514.40 is: 492,001.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,967.60 : 887,316.24 = 356,514.40 : x
  2. Step 2: Convert to fraction form
    642,967.60/887,316.24 = 356,514.40/x
  3. Step 3: Cross multiply
    642,967.60x = 887,316.24 × 356,514.40
  4. Step 4: Simplify right side
    642,967.60x = 316,341,016,913.86
  5. Step 5: Solve for x
    x = 316,341,016,913.86/642,967.60
  6. Step 6: Final answer
    x = 492,001.49

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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.