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Finding the Fourth Proportional to 576,557.40, 863,669.70 and 399,264.60

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Solution

The fourth proportional to 576,557.40, 863,669.70 and 399,264.60 is: 598,089.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,557.40 : 863,669.70 = 399,264.60 : x
  2. Step 2: Convert to fraction form
    576,557.40/863,669.70 = 399,264.60/x
  3. Step 3: Cross multiply
    576,557.40x = 863,669.70 × 399,264.60
  4. Step 4: Simplify right side
    576,557.40x = 344,832,737,302.62
  5. Step 5: Solve for x
    x = 344,832,737,302.62/576,557.40
  6. Step 6: Final answer
    x = 598,089.17

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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.