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Finding the Fourth Proportional to 887,763.90, 1,225,123.12 and 479,873.64

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Solution

The fourth proportional to 887,763.90, 1,225,123.12 and 479,873.64 is: 662,230.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,763.90 : 1,225,123.12 = 479,873.64 : x
  2. Step 2: Convert to fraction form
    887,763.90/1,225,123.12 = 479,873.64/x
  3. Step 3: Cross multiply
    887,763.90x = 1,225,123.12 × 479,873.64
  4. Step 4: Simplify right side
    887,763.90x = 587,904,291,042.56
  5. Step 5: Solve for x
    x = 587,904,291,042.56/887,763.90
  6. Step 6: Final answer
    x = 662,230.45

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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.