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Finding the Fourth Proportional to 582,117.60, 871,426.80 and 345,338.40

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Solution

The fourth proportional to 582,117.60, 871,426.80 and 345,338.40 is: 516,969.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,117.60 : 871,426.80 = 345,338.40 : x
  2. Step 2: Convert to fraction form
    582,117.60/871,426.80 = 345,338.40/x
  3. Step 3: Cross multiply
    582,117.60x = 871,426.80 × 345,338.40
  4. Step 4: Simplify right side
    582,117.60x = 300,937,136,829.12
  5. Step 5: Solve for x
    x = 300,937,136,829.12/582,117.60
  6. Step 6: Final answer
    x = 516,969.66

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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.