Home / 728,875.56-1,005,854.82-402,203.10

Finding the Fourth Proportional to 728,875.56, 1,005,854.82 and 402,203.10

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Solution

The fourth proportional to 728,875.56, 1,005,854.82 and 402,203.10 is: 555,043.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,875.56 : 1,005,854.82 = 402,203.10 : x
  2. Step 2: Convert to fraction form
    728,875.56/1,005,854.82 = 402,203.10/x
  3. Step 3: Cross multiply
    728,875.56x = 1,005,854.82 × 402,203.10
  4. Step 4: Simplify right side
    728,875.56x = 404,557,926,753.94
  5. Step 5: Solve for x
    x = 404,557,926,753.94/728,875.56
  6. Step 6: Final answer
    x = 555,043.89

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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.