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Finding the Fourth Proportional to 662,844.80, 914,335.08 and 469,034.48

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Solution

The fourth proportional to 662,844.80, 914,335.08 and 469,034.48 is: 646,991.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,844.80 : 914,335.08 = 469,034.48 : x
  2. Step 2: Convert to fraction form
    662,844.80/914,335.08 = 469,034.48/x
  3. Step 3: Cross multiply
    662,844.80x = 914,335.08 × 469,034.48
  4. Step 4: Simplify right side
    662,844.80x = 428,854,678,793.56
  5. Step 5: Solve for x
    x = 428,854,678,793.56/662,844.80
  6. Step 6: Final answer
    x = 646,991.09

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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.