Home / 1,282,052.80-1,923,079.20-721,014.40

Finding the Fourth Proportional to 1,282,052.80, 1,923,079.20 and 721,014.40

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Solution

The fourth proportional to 1,282,052.80, 1,923,079.20 and 721,014.40 is: 1,081,521.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282,052.80 : 1,923,079.20 = 721,014.40 : x
  2. Step 2: Convert to fraction form
    1,282,052.80/1,923,079.20 = 721,014.40/x
  3. Step 3: Cross multiply
    1,282,052.80x = 1,923,079.20 × 721,014.40
  4. Step 4: Simplify right side
    1,282,052.80x = 1,386,567,795,540.48
  5. Step 5: Solve for x
    x = 1,386,567,795,540.48/1,282,052.80
  6. Step 6: Final answer
    x = 1,081,521.60

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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.