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Finding the Fourth Proportional to 579,406.70, 869,110.05 and 247,630.70

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Solution

The fourth proportional to 579,406.70, 869,110.05 and 247,630.70 is: 371,446.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,406.70 : 869,110.05 = 247,630.70 : x
  2. Step 2: Convert to fraction form
    579,406.70/869,110.05 = 247,630.70/x
  3. Step 3: Cross multiply
    579,406.70x = 869,110.05 × 247,630.70
  4. Step 4: Simplify right side
    579,406.70x = 215,218,330,058.54
  5. Step 5: Solve for x
    x = 215,218,330,058.54/579,406.70
  6. Step 6: Final answer
    x = 371,446.05

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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.