Home / 816,882.30-1,225,323.45-780,140.70

Finding the Fourth Proportional to 816,882.30, 1,225,323.45 and 780,140.70

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Solution

The fourth proportional to 816,882.30, 1,225,323.45 and 780,140.70 is: 1,170,211.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,882.30 : 1,225,323.45 = 780,140.70 : x
  2. Step 2: Convert to fraction form
    816,882.30/1,225,323.45 = 780,140.70/x
  3. Step 3: Cross multiply
    816,882.30x = 1,225,323.45 × 780,140.70
  4. Step 4: Simplify right side
    816,882.30x = 955,924,694,009.42
  5. Step 5: Solve for x
    x = 955,924,694,009.42/816,882.30
  6. Step 6: Final answer
    x = 1,170,211.05

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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.