Home / 901,387.20-1,243,914.60-498,979.20

Finding the Fourth Proportional to 901,387.20, 1,243,914.60 and 498,979.20

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Solution

The fourth proportional to 901,387.20, 1,243,914.60 and 498,979.20 is: 688,591.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    901,387.20 : 1,243,914.60 = 498,979.20 : x
  2. Step 2: Convert to fraction form
    901,387.20/1,243,914.60 = 498,979.20/x
  3. Step 3: Cross multiply
    901,387.20x = 1,243,914.60 × 498,979.20
  4. Step 4: Simplify right side
    901,387.20x = 620,687,511,976.32
  5. Step 5: Solve for x
    x = 620,687,511,976.32/901,387.20
  6. Step 6: Final answer
    x = 688,591.44

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Double scale
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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.