Home / 725,812.04-1,001,646.15-399,149.88

Finding the Fourth Proportional to 725,812.04, 1,001,646.15 and 399,149.88

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Solution

The fourth proportional to 725,812.04, 1,001,646.15 and 399,149.88 is: 550,840.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,812.04 : 1,001,646.15 = 399,149.88 : x
  2. Step 2: Convert to fraction form
    725,812.04/1,001,646.15 = 399,149.88/x
  3. Step 3: Cross multiply
    725,812.04x = 1,001,646.15 × 399,149.88
  4. Step 4: Simplify right side
    725,812.04x = 399,806,937,567.20
  5. Step 5: Solve for x
    x = 399,806,937,567.20/725,812.04
  6. Step 6: Final answer
    x = 550,840.87

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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.