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Finding the Fourth Proportional to 654,438.30, 981,657.45 and 355,062.30

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Solution

The fourth proportional to 654,438.30, 981,657.45 and 355,062.30 is: 532,593.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,438.30 : 981,657.45 = 355,062.30 : x
  2. Step 2: Convert to fraction form
    654,438.30/981,657.45 = 355,062.30/x
  3. Step 3: Cross multiply
    654,438.30x = 981,657.45 × 355,062.30
  4. Step 4: Simplify right side
    654,438.30x = 348,549,552,009.14
  5. Step 5: Solve for x
    x = 348,549,552,009.14/654,438.30
  6. Step 6: Final answer
    x = 532,593.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.