Home / 790,789.80-1,186,281.90-258,166.20

Finding the Fourth Proportional to 790,789.80, 1,186,281.90 and 258,166.20

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Solution

The fourth proportional to 790,789.80, 1,186,281.90 and 258,166.20 is: 387,281.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,789.80 : 1,186,281.90 = 258,166.20 : x
  2. Step 2: Convert to fraction form
    790,789.80/1,186,281.90 = 258,166.20/x
  3. Step 3: Cross multiply
    790,789.80x = 1,186,281.90 × 258,166.20
  4. Step 4: Simplify right side
    790,789.80x = 306,257,890,251.78
  5. Step 5: Solve for x
    x = 306,257,890,251.78/790,789.80
  6. Step 6: Final answer
    x = 387,281.03

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1.5x scale

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.