Home / 724,709.76-1,000,191.75-438,231.90

Finding the Fourth Proportional to 724,709.76, 1,000,191.75 and 438,231.90

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Solution

The fourth proportional to 724,709.76, 1,000,191.75 and 438,231.90 is: 604,815.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,709.76 : 1,000,191.75 = 438,231.90 : x
  2. Step 2: Convert to fraction form
    724,709.76/1,000,191.75 = 438,231.90/x
  3. Step 3: Cross multiply
    724,709.76x = 1,000,191.75 × 438,231.90
  4. Step 4: Simplify right side
    724,709.76x = 438,315,930,966.83
  5. Step 5: Solve for x
    x = 438,315,930,966.83/724,709.76
  6. Step 6: Final answer
    x = 604,815.82

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1.5x scale

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.