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Finding the Fourth Proportional to 1,220,410.80, 1,834,552.80 and 867,866.40

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Solution

The fourth proportional to 1,220,410.80, 1,834,552.80 and 867,866.40 is: 1,304,599.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,410.80 : 1,834,552.80 = 867,866.40 : x
  2. Step 2: Convert to fraction form
    1,220,410.80/1,834,552.80 = 867,866.40/x
  3. Step 3: Cross multiply
    1,220,410.80x = 1,834,552.80 × 867,866.40
  4. Step 4: Simplify right side
    1,220,410.80x = 1,592,146,734,145.92
  5. Step 5: Solve for x
    x = 1,592,146,734,145.92/1,220,410.80
  6. Step 6: Final answer
    x = 1,304,599.02

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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.