Home / 724,699.65-1,000,177.77-438,221.78

Finding the Fourth Proportional to 724,699.65, 1,000,177.77 and 438,221.78

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Solution

The fourth proportional to 724,699.65, 1,000,177.77 and 438,221.78 is: 604,801.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,699.65 : 1,000,177.77 = 438,221.78 : x
  2. Step 2: Convert to fraction form
    724,699.65/1,000,177.77 = 438,221.78/x
  3. Step 3: Cross multiply
    724,699.65x = 1,000,177.77 × 438,221.78
  4. Step 4: Simplify right side
    724,699.65x = 438,299,686,829.61
  5. Step 5: Solve for x
    x = 438,299,686,829.61/724,699.65
  6. Step 6: Final answer
    x = 604,801.85

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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.