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Finding the Fourth Proportional to 648,047.80, 972,071.70 and 363,446.20

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Solution

The fourth proportional to 648,047.80, 972,071.70 and 363,446.20 is: 545,169.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,047.80 : 972,071.70 = 363,446.20 : x
  2. Step 2: Convert to fraction form
    648,047.80/972,071.70 = 363,446.20/x
  3. Step 3: Cross multiply
    648,047.80x = 972,071.70 × 363,446.20
  4. Step 4: Simplify right side
    648,047.80x = 353,295,765,492.54
  5. Step 5: Solve for x
    x = 353,295,765,492.54/648,047.80
  6. Step 6: Final answer
    x = 545,169.30

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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.