Home / 787,051.97-1,086,126.65-447,520.19

Finding the Fourth Proportional to 787,051.97, 1,086,126.65 and 447,520.19

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Solution

The fourth proportional to 787,051.97, 1,086,126.65 and 447,520.19 is: 617,574.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,051.97 : 1,086,126.65 = 447,520.19 : x
  2. Step 2: Convert to fraction form
    787,051.97/1,086,126.65 = 447,520.19/x
  3. Step 3: Cross multiply
    787,051.97x = 1,086,126.65 × 447,520.19
  4. Step 4: Simplify right side
    787,051.97x = 486,063,602,534.46
  5. Step 5: Solve for x
    x = 486,063,602,534.46/787,051.97
  6. Step 6: Final answer
    x = 617,574.98

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.