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Finding the Fourth Proportional to 558,496.60, 770,700.96 and 310,123.15

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Solution

The fourth proportional to 558,496.60, 770,700.96 and 310,123.15 is: 427,956.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,496.60 : 770,700.96 = 310,123.15 : x
  2. Step 2: Convert to fraction form
    558,496.60/770,700.96 = 310,123.15/x
  3. Step 3: Cross multiply
    558,496.60x = 770,700.96 × 310,123.15
  4. Step 4: Simplify right side
    558,496.60x = 239,012,209,423.22
  5. Step 5: Solve for x
    x = 239,012,209,423.22/558,496.60
  6. Step 6: Final answer
    x = 427,956.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.