Home / 1,397,384.40-2,094,694.20-686,830.80

Finding the Fourth Proportional to 1,397,384.40, 2,094,694.20 and 686,830.80

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Solution

The fourth proportional to 1,397,384.40, 2,094,694.20 and 686,830.80 is: 1,029,566.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397,384.40 : 2,094,694.20 = 686,830.80 : x
  2. Step 2: Convert to fraction form
    1,397,384.40/2,094,694.20 = 686,830.80/x
  3. Step 3: Cross multiply
    1,397,384.40x = 2,094,694.20 × 686,830.80
  4. Step 4: Simplify right side
    1,397,384.40x = 1,438,700,493,141.36
  5. Step 5: Solve for x
    x = 1,438,700,493,141.36/1,397,384.40
  6. Step 6: Final answer
    x = 1,029,566.73

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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.