Home / 1,245,000.30-1,867,500.45-1,132,807.20

Finding the Fourth Proportional to 1,245,000.30, 1,867,500.45 and 1,132,807.20

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Solution

The fourth proportional to 1,245,000.30, 1,867,500.45 and 1,132,807.20 is: 1,699,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,000.30 : 1,867,500.45 = 1,132,807.20 : x
  2. Step 2: Convert to fraction form
    1,245,000.30/1,867,500.45 = 1,132,807.20/x
  3. Step 3: Cross multiply
    1,245,000.30x = 1,867,500.45 × 1,132,807.20
  4. Step 4: Simplify right side
    1,245,000.30x = 2,115,517,955,763.24
  5. Step 5: Solve for x
    x = 2,115,517,955,763.24/1,245,000.30
  6. Step 6: Final answer
    x = 1,699,210.80

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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.