Home / 1,221,660.80-1,836,427.80-869,116.40

Finding the Fourth Proportional to 1,221,660.80, 1,836,427.80 and 869,116.40

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Solution

The fourth proportional to 1,221,660.80, 1,836,427.80 and 869,116.40 is: 1,306,475.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,660.80 : 1,836,427.80 = 869,116.40 : x
  2. Step 2: Convert to fraction form
    1,221,660.80/1,836,427.80 = 869,116.40/x
  3. Step 3: Cross multiply
    1,221,660.80x = 1,836,427.80 × 869,116.40
  4. Step 4: Simplify right side
    1,221,660.80x = 1,596,069,518,395.92
  5. Step 5: Solve for x
    x = 1,596,069,518,395.92/1,221,660.80
  6. Step 6: Final answer
    x = 1,306,475.18

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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.