Home / 1,123,440.30-1,685,160.45-990,470.70

Finding the Fourth Proportional to 1,123,440.30, 1,685,160.45 and 990,470.70

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Solution

The fourth proportional to 1,123,440.30, 1,685,160.45 and 990,470.70 is: 1,485,706.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,440.30 : 1,685,160.45 = 990,470.70 : x
  2. Step 2: Convert to fraction form
    1,123,440.30/1,685,160.45 = 990,470.70/x
  3. Step 3: Cross multiply
    1,123,440.30x = 1,685,160.45 × 990,470.70
  4. Step 4: Simplify right side
    1,123,440.30x = 1,669,102,050,523.82
  5. Step 5: Solve for x
    x = 1,669,102,050,523.82/1,123,440.30
  6. Step 6: Final answer
    x = 1,485,706.05

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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.