Home / 765,997.28-1,148,403.88-386,722.76

Finding the Fourth Proportional to 765,997.28, 1,148,403.88 and 386,722.76

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Solution

The fourth proportional to 765,997.28, 1,148,403.88 and 386,722.76 is: 579,785.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,997.28 : 1,148,403.88 = 386,722.76 : x
  2. Step 2: Convert to fraction form
    765,997.28/1,148,403.88 = 386,722.76/x
  3. Step 3: Cross multiply
    765,997.28x = 1,148,403.88 × 386,722.76
  4. Step 4: Simplify right side
    765,997.28x = 444,113,918,068.31
  5. Step 5: Solve for x
    x = 444,113,918,068.31/765,997.28
  6. Step 6: Final answer
    x = 579,785.24

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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.