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Finding the Fourth Proportional to 536,660.10, 804,990.15 and 402,815.70

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Solution

The fourth proportional to 536,660.10, 804,990.15 and 402,815.70 is: 604,223.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,660.10 : 804,990.15 = 402,815.70 : x
  2. Step 2: Convert to fraction form
    536,660.10/804,990.15 = 402,815.70/x
  3. Step 3: Cross multiply
    536,660.10x = 804,990.15 × 402,815.70
  4. Step 4: Simplify right side
    536,660.10x = 324,262,670,765.36
  5. Step 5: Solve for x
    x = 324,262,670,765.36/536,660.10
  6. Step 6: Final answer
    x = 604,223.55

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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.