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Finding the Fourth Proportional to 911,393.69, 1,365,901.45 and 659,522.57

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Solution

The fourth proportional to 911,393.69, 1,365,901.45 and 659,522.57 is: 988,423.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,393.69 : 1,365,901.45 = 659,522.57 : x
  2. Step 2: Convert to fraction form
    911,393.69/1,365,901.45 = 659,522.57/x
  3. Step 3: Cross multiply
    911,393.69x = 1,365,901.45 × 659,522.57
  4. Step 4: Simplify right side
    911,393.69x = 900,842,826,192.41
  5. Step 5: Solve for x
    x = 900,842,826,192.41/911,393.69
  6. Step 6: Final answer
    x = 988,423.38

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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.