Home / 865,868.40-1,297,927.80-392,893.20

Finding the Fourth Proportional to 865,868.40, 1,297,927.80 and 392,893.20

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Solution

The fourth proportional to 865,868.40, 1,297,927.80 and 392,893.20 is: 588,942.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,868.40 : 1,297,927.80 = 392,893.20 : x
  2. Step 2: Convert to fraction form
    865,868.40/1,297,927.80 = 392,893.20/x
  3. Step 3: Cross multiply
    865,868.40x = 1,297,927.80 × 392,893.20
  4. Step 4: Simplify right side
    865,868.40x = 509,947,006,710.96
  5. Step 5: Solve for x
    x = 509,947,006,710.96/865,868.40
  6. Step 6: Final answer
    x = 588,942.85

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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.