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Finding the Fourth Proportional to 648,197.40, 972,296.10 and 577,338.60

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Solution

The fourth proportional to 648,197.40, 972,296.10 and 577,338.60 is: 866,007.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,197.40 : 972,296.10 = 577,338.60 : x
  2. Step 2: Convert to fraction form
    648,197.40/972,296.10 = 577,338.60/x
  3. Step 3: Cross multiply
    648,197.40x = 972,296.10 × 577,338.60
  4. Step 4: Simplify right side
    648,197.40x = 561,344,069,159.46
  5. Step 5: Solve for x
    x = 561,344,069,159.46/648,197.40
  6. Step 6: Final answer
    x = 866,007.90

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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.