Home / 809,995.20-1,214,992.80-542,306.40

Finding the Fourth Proportional to 809,995.20, 1,214,992.80 and 542,306.40

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Solution

The fourth proportional to 809,995.20, 1,214,992.80 and 542,306.40 is: 813,459.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,995.20 : 1,214,992.80 = 542,306.40 : x
  2. Step 2: Convert to fraction form
    809,995.20/1,214,992.80 = 542,306.40/x
  3. Step 3: Cross multiply
    809,995.20x = 1,214,992.80 × 542,306.40
  4. Step 4: Simplify right side
    809,995.20x = 658,898,371,393.92
  5. Step 5: Solve for x
    x = 658,898,371,393.92/809,995.20
  6. Step 6: Final answer
    x = 813,459.60

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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.