Home / 728,875.06-1,005,854.13-402,202.60

Finding the Fourth Proportional to 728,875.06, 1,005,854.13 and 402,202.60

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Solution

The fourth proportional to 728,875.06, 1,005,854.13 and 402,202.60 is: 555,043.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,875.06 : 1,005,854.13 = 402,202.60 : x
  2. Step 2: Convert to fraction form
    728,875.06/1,005,854.13 = 402,202.60/x
  3. Step 3: Cross multiply
    728,875.06x = 1,005,854.13 × 402,202.60
  4. Step 4: Simplify right side
    728,875.06x = 404,557,146,306.74
  5. Step 5: Solve for x
    x = 404,557,146,306.74/728,875.06
  6. Step 6: Final answer
    x = 555,043.20

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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.