Home / 728,837.28-1,005,788.70-402,153.30

Finding the Fourth Proportional to 728,837.28, 1,005,788.70 and 402,153.30

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Solution

The fourth proportional to 728,837.28, 1,005,788.70 and 402,153.30 is: 554,967.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,837.28 : 1,005,788.70 = 402,153.30 : x
  2. Step 2: Convert to fraction form
    728,837.28/1,005,788.70 = 402,153.30/x
  3. Step 3: Cross multiply
    728,837.28x = 1,005,788.70 × 402,153.30
  4. Step 4: Simplify right side
    728,837.28x = 404,481,244,807.71
  5. Step 5: Solve for x
    x = 404,481,244,807.71/728,837.28
  6. Step 6: Final answer
    x = 554,967.83

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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.