Home / 726,505.80-1,002,562.37-420,595.11

Finding the Fourth Proportional to 726,505.80, 1,002,562.37 and 420,595.11

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Solution

The fourth proportional to 726,505.80, 1,002,562.37 and 420,595.11 is: 580,412.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,505.80 : 1,002,562.37 = 420,595.11 : x
  2. Step 2: Convert to fraction form
    726,505.80/1,002,562.37 = 420,595.11/x
  3. Step 3: Cross multiply
    726,505.80x = 1,002,562.37 × 420,595.11
  4. Step 4: Simplify right side
    726,505.80x = 421,672,828,189.04
  5. Step 5: Solve for x
    x = 421,672,828,189.04/726,505.80
  6. Step 6: Final answer
    x = 580,412.20

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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.