Home / 728,773.40-1,005,710.77-402,086.39

Finding the Fourth Proportional to 728,773.40, 1,005,710.77 and 402,086.39

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Solution

The fourth proportional to 728,773.40, 1,005,710.77 and 402,086.39 is: 554,881.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,773.40 : 1,005,710.77 = 402,086.39 : x
  2. Step 2: Convert to fraction form
    728,773.40/1,005,710.77 = 402,086.39/x
  3. Step 3: Cross multiply
    728,773.40x = 1,005,710.77 × 402,086.39
  4. Step 4: Simplify right side
    728,773.40x = 404,382,610,882.99
  5. Step 5: Solve for x
    x = 404,382,610,882.99/728,773.40
  6. Step 6: Final answer
    x = 554,881.13

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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.