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Finding the Fourth Proportional to 975,998.80, 1,463,998.20 and 641,155.60

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Solution

The fourth proportional to 975,998.80, 1,463,998.20 and 641,155.60 is: 961,733.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    975,998.80 : 1,463,998.20 = 641,155.60 : x
  2. Step 2: Convert to fraction form
    975,998.80/1,463,998.20 = 641,155.60/x
  3. Step 3: Cross multiply
    975,998.80x = 1,463,998.20 × 641,155.60
  4. Step 4: Simplify right side
    975,998.80x = 938,650,644,319.92
  5. Step 5: Solve for x
    x = 938,650,644,319.92/975,998.80
  6. Step 6: Final answer
    x = 961,733.40

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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.