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Finding the Fourth Proportional to 486,095.40, 729,143.10 and 447,713.55

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Solution

The fourth proportional to 486,095.40, 729,143.10 and 447,713.55 is: 671,570.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,095.40 : 729,143.10 = 447,713.55 : x
  2. Step 2: Convert to fraction form
    486,095.40/729,143.10 = 447,713.55/x
  3. Step 3: Cross multiply
    486,095.40x = 729,143.10 × 447,713.55
  4. Step 4: Simplify right side
    486,095.40x = 326,447,245,759.01
  5. Step 5: Solve for x
    x = 326,447,245,759.01/486,095.40
  6. Step 6: Final answer
    x = 671,570.33

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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.