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Finding the Fourth Proportional to 550,475.70, 825,713.55 and 475,680.30

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Solution

The fourth proportional to 550,475.70, 825,713.55 and 475,680.30 is: 713,520.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,475.70 : 825,713.55 = 475,680.30 : x
  2. Step 2: Convert to fraction form
    550,475.70/825,713.55 = 475,680.30/x
  3. Step 3: Cross multiply
    550,475.70x = 825,713.55 × 475,680.30
  4. Step 4: Simplify right side
    550,475.70x = 392,775,669,178.07
  5. Step 5: Solve for x
    x = 392,775,669,178.07/550,475.70
  6. Step 6: Final answer
    x = 713,520.45

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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.