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Finding the Fourth Proportional to 648,115.80, 972,173.70 and 363,514.20

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Solution

The fourth proportional to 648,115.80, 972,173.70 and 363,514.20 is: 545,271.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,115.80 : 972,173.70 = 363,514.20 : x
  2. Step 2: Convert to fraction form
    648,115.80/972,173.70 = 363,514.20/x
  3. Step 3: Cross multiply
    648,115.80x = 972,173.70 × 363,514.20
  4. Step 4: Simplify right side
    648,115.80x = 353,398,944,816.54
  5. Step 5: Solve for x
    x = 353,398,944,816.54/648,115.80
  6. Step 6: Final answer
    x = 545,271.30

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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.