Home / 785,423.85-1,178,147.61-299,132.91

Finding the Fourth Proportional to 785,423.85, 1,178,147.61 and 299,132.91

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Solution

The fourth proportional to 785,423.85, 1,178,147.61 and 299,132.91 is: 448,703.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,423.85 : 1,178,147.61 = 299,132.91 : x
  2. Step 2: Convert to fraction form
    785,423.85/1,178,147.61 = 299,132.91/x
  3. Step 3: Cross multiply
    785,423.85x = 1,178,147.61 × 299,132.91
  4. Step 4: Simplify right side
    785,423.85x = 352,422,722,988.85
  5. Step 5: Solve for x
    x = 352,422,722,988.85/785,423.85
  6. Step 6: Final answer
    x = 448,703.87

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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.