Home / 726,508.05-1,002,565.47-420,597.36

Finding the Fourth Proportional to 726,508.05, 1,002,565.47 and 420,597.36

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Solution

The fourth proportional to 726,508.05, 1,002,565.47 and 420,597.36 is: 580,415.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,508.05 : 1,002,565.47 = 420,597.36 : x
  2. Step 2: Convert to fraction form
    726,508.05/1,002,565.47 = 420,597.36/x
  3. Step 3: Cross multiply
    726,508.05x = 1,002,565.47 × 420,597.36
  4. Step 4: Simplify right side
    726,508.05x = 421,676,389,909.16
  5. Step 5: Solve for x
    x = 421,676,389,909.16/726,508.05
  6. Step 6: Final answer
    x = 580,415.30

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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.