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Finding the Fourth Proportional to 648,163.20, 972,244.80 and 608,764.80

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Solution

The fourth proportional to 648,163.20, 972,244.80 and 608,764.80 is: 913,147.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,163.20 : 972,244.80 = 608,764.80 : x
  2. Step 2: Convert to fraction form
    648,163.20/972,244.80 = 608,764.80/x
  3. Step 3: Cross multiply
    648,163.20x = 972,244.80 × 608,764.80
  4. Step 4: Simplify right side
    648,163.20x = 591,868,411,223.04
  5. Step 5: Solve for x
    x = 591,868,411,223.04/648,163.20
  6. Step 6: Final answer
    x = 913,147.20

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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.