Home / 1,587,079.80-2,379,660.39-639,343.62

Finding the Fourth Proportional to 1,587,079.80, 2,379,660.39 and 639,343.62

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Solution

The fourth proportional to 1,587,079.80, 2,379,660.39 and 639,343.62 is: 958,628.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587,079.80 : 2,379,660.39 = 639,343.62 : x
  2. Step 2: Convert to fraction form
    1,587,079.80/2,379,660.39 = 639,343.62/x
  3. Step 3: Cross multiply
    1,587,079.80x = 2,379,660.39 × 639,343.62
  4. Step 4: Simplify right side
    1,587,079.80x = 1,521,420,688,113.21
  5. Step 5: Solve for x
    x = 1,521,420,688,113.21/1,587,079.80
  6. Step 6: Final answer
    x = 958,628.98

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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.