Home / 1,123,277.20-1,684,915.80-990,416.95

Finding the Fourth Proportional to 1,123,277.20, 1,684,915.80 and 990,416.95

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Solution

The fourth proportional to 1,123,277.20, 1,684,915.80 and 990,416.95 is: 1,485,625.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,277.20 : 1,684,915.80 = 990,416.95 : x
  2. Step 2: Convert to fraction form
    1,123,277.20/1,684,915.80 = 990,416.95/x
  3. Step 3: Cross multiply
    1,123,277.20x = 1,684,915.80 × 990,416.95
  4. Step 4: Simplify right side
    1,123,277.20x = 1,668,769,167,642.81
  5. Step 5: Solve for x
    x = 1,668,769,167,642.81/1,123,277.20
  6. Step 6: Final answer
    x = 1,485,625.43

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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.