Home / 687,072.70-1,030,609.05-576,847.90

Finding the Fourth Proportional to 687,072.70, 1,030,609.05 and 576,847.90

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Solution

The fourth proportional to 687,072.70, 1,030,609.05 and 576,847.90 is: 865,271.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,072.70 : 1,030,609.05 = 576,847.90 : x
  2. Step 2: Convert to fraction form
    687,072.70/1,030,609.05 = 576,847.90/x
  3. Step 3: Cross multiply
    687,072.70x = 1,030,609.05 × 576,847.90
  4. Step 4: Simplify right side
    687,072.70x = 594,504,666,213.50
  5. Step 5: Solve for x
    x = 594,504,666,213.50/687,072.70
  6. Step 6: Final answer
    x = 865,271.85

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Double scale
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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.