Home / 869,729.40-1,304,594.10-810,680.40

Finding the Fourth Proportional to 869,729.40, 1,304,594.10 and 810,680.40

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Solution

The fourth proportional to 869,729.40, 1,304,594.10 and 810,680.40 is: 1,216,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,729.40 : 1,304,594.10 = 810,680.40 : x
  2. Step 2: Convert to fraction form
    869,729.40/1,304,594.10 = 810,680.40/x
  3. Step 3: Cross multiply
    869,729.40x = 1,304,594.10 × 810,680.40
  4. Step 4: Simplify right side
    869,729.40x = 1,057,608,866,825.64
  5. Step 5: Solve for x
    x = 1,057,608,866,825.64/869,729.40
  6. Step 6: Final answer
    x = 1,216,020.60

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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.