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Finding the Fourth Proportional to 976,909.80, 1,465,364.70 and 577,344.90

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Solution

The fourth proportional to 976,909.80, 1,465,364.70 and 577,344.90 is: 866,017.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,909.80 : 1,465,364.70 = 577,344.90 : x
  2. Step 2: Convert to fraction form
    976,909.80/1,465,364.70 = 577,344.90/x
  3. Step 3: Cross multiply
    976,909.80x = 1,465,364.70 × 577,344.90
  4. Step 4: Simplify right side
    976,909.80x = 846,020,836,185.03
  5. Step 5: Solve for x
    x = 846,020,836,185.03/976,909.80
  6. Step 6: Final answer
    x = 866,017.35

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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.