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Finding the Fourth Proportional to 720,003.20, 1,077,931.20 and 699,267.20

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Solution

The fourth proportional to 720,003.20, 1,077,931.20 and 699,267.20 is: 1,046,886.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,003.20 : 1,077,931.20 = 699,267.20 : x
  2. Step 2: Convert to fraction form
    720,003.20/1,077,931.20 = 699,267.20/x
  3. Step 3: Cross multiply
    720,003.20x = 1,077,931.20 × 699,267.20
  4. Step 4: Simplify right side
    720,003.20x = 753,761,932,016.64
  5. Step 5: Solve for x
    x = 753,761,932,016.64/720,003.20
  6. Step 6: Final answer
    x = 1,046,886.92

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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.