Home / 725,646.48-1,001,404.10-398,973.28

Finding the Fourth Proportional to 725,646.48, 1,001,404.10 and 398,973.28

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Solution

The fourth proportional to 725,646.48, 1,001,404.10 and 398,973.28 is: 550,589.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,646.48 : 1,001,404.10 = 398,973.28 : x
  2. Step 2: Convert to fraction form
    725,646.48/1,001,404.10 = 398,973.28/x
  3. Step 3: Cross multiply
    725,646.48x = 1,001,404.10 × 398,973.28
  4. Step 4: Simplify right side
    725,646.48x = 399,533,478,382.45
  5. Step 5: Solve for x
    x = 399,533,478,382.45/725,646.48
  6. Step 6: Final answer
    x = 550,589.70

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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.