Home / 724,204.32-1,086,289.92-426,572.88

Finding the Fourth Proportional to 724,204.32, 1,086,289.92 and 426,572.88

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Solution

The fourth proportional to 724,204.32, 1,086,289.92 and 426,572.88 is: 639,849.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,204.32 : 1,086,289.92 = 426,572.88 : x
  2. Step 2: Convert to fraction form
    724,204.32/1,086,289.92 = 426,572.88/x
  3. Step 3: Cross multiply
    724,204.32x = 1,086,289.92 × 426,572.88
  4. Step 4: Simplify right side
    724,204.32x = 463,381,819,689.37
  5. Step 5: Solve for x
    x = 463,381,819,689.37/724,204.32
  6. Step 6: Final answer
    x = 639,849.57

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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.