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Finding the Fourth Proportional to 713,455.36, 984,557.16 and 391,168.24

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Solution

The fourth proportional to 713,455.36, 984,557.16 and 391,168.24 is: 539,806.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,455.36 : 984,557.16 = 391,168.24 : x
  2. Step 2: Convert to fraction form
    713,455.36/984,557.16 = 391,168.24/x
  3. Step 3: Cross multiply
    713,455.36x = 984,557.16 × 391,168.24
  4. Step 4: Simplify right side
    713,455.36x = 385,127,491,456.60
  5. Step 5: Solve for x
    x = 385,127,491,456.60/713,455.36
  6. Step 6: Final answer
    x = 539,806.01

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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.