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Finding the Fourth Proportional to 547,285.70, 820,928.55 and 523,957.70

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Solution

The fourth proportional to 547,285.70, 820,928.55 and 523,957.70 is: 785,936.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,285.70 : 820,928.55 = 523,957.70 : x
  2. Step 2: Convert to fraction form
    547,285.70/820,928.55 = 523,957.70/x
  3. Step 3: Cross multiply
    547,285.70x = 820,928.55 × 523,957.70
  4. Step 4: Simplify right side
    547,285.70x = 430,131,834,922.34
  5. Step 5: Solve for x
    x = 430,131,834,922.34/547,285.70
  6. Step 6: Final answer
    x = 785,936.55

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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.