Home / 1,123,282.20-1,684,923.30-990,421.95

Finding the Fourth Proportional to 1,123,282.20, 1,684,923.30 and 990,421.95

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Solution

The fourth proportional to 1,123,282.20, 1,684,923.30 and 990,421.95 is: 1,485,632.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,282.20 : 1,684,923.30 = 990,421.95 : x
  2. Step 2: Convert to fraction form
    1,123,282.20/1,684,923.30 = 990,421.95/x
  3. Step 3: Cross multiply
    1,123,282.20x = 1,684,923.30 × 990,421.95
  4. Step 4: Simplify right side
    1,123,282.20x = 1,668,785,020,386.44
  5. Step 5: Solve for x
    x = 1,668,785,020,386.44/1,123,282.20
  6. Step 6: Final answer
    x = 1,485,632.93

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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.