Home / 1,239,411.20-1,859,116.80-1,038,644.60

Finding the Fourth Proportional to 1,239,411.20, 1,859,116.80 and 1,038,644.60

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Solution

The fourth proportional to 1,239,411.20, 1,859,116.80 and 1,038,644.60 is: 1,557,966.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,411.20 : 1,859,116.80 = 1,038,644.60 : x
  2. Step 2: Convert to fraction form
    1,239,411.20/1,859,116.80 = 1,038,644.60/x
  3. Step 3: Cross multiply
    1,239,411.20x = 1,859,116.80 × 1,038,644.60
  4. Step 4: Simplify right side
    1,239,411.20x = 1,930,961,625,089.28
  5. Step 5: Solve for x
    x = 1,930,961,625,089.28/1,239,411.20
  6. Step 6: Final answer
    x = 1,557,966.90

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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.