Home / 686,000.20-1,029,000.30-187,364.20

Finding the Fourth Proportional to 686,000.20, 1,029,000.30 and 187,364.20

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Solution

The fourth proportional to 686,000.20, 1,029,000.30 and 187,364.20 is: 281,046.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,000.20 : 1,029,000.30 = 187,364.20 : x
  2. Step 2: Convert to fraction form
    686,000.20/1,029,000.30 = 187,364.20/x
  3. Step 3: Cross multiply
    686,000.20x = 1,029,000.30 × 187,364.20
  4. Step 4: Simplify right side
    686,000.20x = 192,797,818,009.26
  5. Step 5: Solve for x
    x = 192,797,818,009.26/686,000.20
  6. Step 6: Final answer
    x = 281,046.30

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Similar ratio
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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.