Home / 1,267,981.80-1,902,259.71-728,487.15

Finding the Fourth Proportional to 1,267,981.80, 1,902,259.71 and 728,487.15

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Solution

The fourth proportional to 1,267,981.80, 1,902,259.71 and 728,487.15 is: 1,092,895.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267,981.80 : 1,902,259.71 = 728,487.15 : x
  2. Step 2: Convert to fraction form
    1,267,981.80/1,902,259.71 = 728,487.15/x
  3. Step 3: Cross multiply
    1,267,981.80x = 1,902,259.71 × 728,487.15
  4. Step 4: Simplify right side
    1,267,981.80x = 1,385,771,754,697.73
  5. Step 5: Solve for x
    x = 1,385,771,754,697.73/1,267,981.80
  6. Step 6: Final answer
    x = 1,092,895.62

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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.