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Finding the Fourth Proportional to 662,543.76, 914,429.52 and 390,595.44

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Solution

The fourth proportional to 662,543.76, 914,429.52 and 390,595.44 is: 539,091.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,543.76 : 914,429.52 = 390,595.44 : x
  2. Step 2: Convert to fraction form
    662,543.76/914,429.52 = 390,595.44/x
  3. Step 3: Cross multiply
    662,543.76x = 914,429.52 × 390,595.44
  4. Step 4: Simplify right side
    662,543.76x = 357,172,000,713.39
  5. Step 5: Solve for x
    x = 357,172,000,713.39/662,543.76
  6. Step 6: Final answer
    x = 539,091.94

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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.