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Finding the Fourth Proportional to 520,673.45, 781,134.77 and 183,789.72

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Solution

The fourth proportional to 520,673.45, 781,134.77 and 183,789.72 is: 275,728.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,673.45 : 781,134.77 = 183,789.72 : x
  2. Step 2: Convert to fraction form
    520,673.45/781,134.77 = 183,789.72/x
  3. Step 3: Cross multiply
    520,673.45x = 781,134.77 × 183,789.72
  4. Step 4: Simplify right side
    520,673.45x = 143,564,541,120.04
  5. Step 5: Solve for x
    x = 143,564,541,120.04/520,673.45
  6. Step 6: Final answer
    x = 275,728.56

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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.