Home / 699,807.60-1,049,711.40-279,385.20

Finding the Fourth Proportional to 699,807.60, 1,049,711.40 and 279,385.20

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Solution

The fourth proportional to 699,807.60, 1,049,711.40 and 279,385.20 is: 419,077.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,807.60 : 1,049,711.40 = 279,385.20 : x
  2. Step 2: Convert to fraction form
    699,807.60/1,049,711.40 = 279,385.20/x
  3. Step 3: Cross multiply
    699,807.60x = 1,049,711.40 × 279,385.20
  4. Step 4: Simplify right side
    699,807.60x = 293,273,829,431.28
  5. Step 5: Solve for x
    x = 293,273,829,431.28/699,807.60
  6. Step 6: Final answer
    x = 419,077.80

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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.