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Finding the Fourth Proportional to 520,490.76, 781,152.89 and 503,883.60

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Solution

The fourth proportional to 520,490.76, 781,152.89 and 503,883.60 is: 756,228.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,490.76 : 781,152.89 = 503,883.60 : x
  2. Step 2: Convert to fraction form
    520,490.76/781,152.89 = 503,883.60/x
  3. Step 3: Cross multiply
    520,490.76x = 781,152.89 × 503,883.60
  4. Step 4: Simplify right side
    520,490.76x = 393,610,127,844.19
  5. Step 5: Solve for x
    x = 393,610,127,844.19/520,490.76
  6. Step 6: Final answer
    x = 756,228.85

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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.