Home / 1,439,306.91-2,158,583.58-428,156.64

Finding the Fourth Proportional to 1,439,306.91, 2,158,583.58 and 428,156.64

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Solution

The fourth proportional to 1,439,306.91, 2,158,583.58 and 428,156.64 is: 642,122.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439,306.91 : 2,158,583.58 = 428,156.64 : x
  2. Step 2: Convert to fraction form
    1,439,306.91/2,158,583.58 = 428,156.64/x
  3. Step 3: Cross multiply
    1,439,306.91x = 2,158,583.58 × 428,156.64
  4. Step 4: Simplify right side
    1,439,306.91x = 924,211,892,771.97
  5. Step 5: Solve for x
    x = 924,211,892,771.97/1,439,306.91
  6. Step 6: Final answer
    x = 642,122.88

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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.