Home / 765,819.40-1,148,729.28-344,603.20

Finding the Fourth Proportional to 765,819.40, 1,148,729.28 and 344,603.20

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Solution

The fourth proportional to 765,819.40, 1,148,729.28 and 344,603.20 is: 516,904.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,819.40 : 1,148,729.28 = 344,603.20 : x
  2. Step 2: Convert to fraction form
    765,819.40/1,148,729.28 = 344,603.20/x
  3. Step 3: Cross multiply
    765,819.40x = 1,148,729.28 × 344,603.20
  4. Step 4: Simplify right side
    765,819.40x = 395,855,785,821.70
  5. Step 5: Solve for x
    x = 395,855,785,821.70/765,819.40
  6. Step 6: Final answer
    x = 516,904.88

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1.5x scale

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.