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Finding the Fourth Proportional to 517,470.30, 776,205.45 and 488,601.90

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Solution

The fourth proportional to 517,470.30, 776,205.45 and 488,601.90 is: 732,902.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,470.30 : 776,205.45 = 488,601.90 : x
  2. Step 2: Convert to fraction form
    517,470.30/776,205.45 = 488,601.90/x
  3. Step 3: Cross multiply
    517,470.30x = 776,205.45 × 488,601.90
  4. Step 4: Simplify right side
    517,470.30x = 379,255,457,660.36
  5. Step 5: Solve for x
    x = 379,255,457,660.36/517,470.30
  6. Step 6: Final answer
    x = 732,902.85

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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.