Home / 900,725.20-1,242,991.56-498,320.08

Finding the Fourth Proportional to 900,725.20, 1,242,991.56 and 498,320.08

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Solution

The fourth proportional to 900,725.20, 1,242,991.56 and 498,320.08 is: 687,676.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,725.20 : 1,242,991.56 = 498,320.08 : x
  2. Step 2: Convert to fraction form
    900,725.20/1,242,991.56 = 498,320.08/x
  3. Step 3: Cross multiply
    900,725.20x = 1,242,991.56 × 498,320.08
  4. Step 4: Simplify right side
    900,725.20x = 619,407,653,618.53
  5. Step 5: Solve for x
    x = 619,407,653,618.53/900,725.20
  6. Step 6: Final answer
    x = 687,676.61

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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.