Home / 765,604.92-1,148,109.28-316,398.36

Finding the Fourth Proportional to 765,604.92, 1,148,109.28 and 316,398.36

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Solution

The fourth proportional to 765,604.92, 1,148,109.28 and 316,398.36 is: 474,474.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,604.92 : 1,148,109.28 = 316,398.36 : x
  2. Step 2: Convert to fraction form
    765,604.92/1,148,109.28 = 316,398.36/x
  3. Step 3: Cross multiply
    765,604.92x = 1,148,109.28 × 316,398.36
  4. Step 4: Simplify right side
    765,604.92x = 363,259,893,292.78
  5. Step 5: Solve for x
    x = 363,259,893,292.78/765,604.92
  6. Step 6: Final answer
    x = 474,474.35

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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.