Home / 579,119.40-868,274.10-342,340.20

Finding the Fourth Proportional to 579,119.40, 868,274.10 and 342,340.20

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Solution

The fourth proportional to 579,119.40, 868,274.10 and 342,340.20 is: 513,270.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,119.40 : 868,274.10 = 342,340.20 : x
  2. Step 2: Convert to fraction form
    579,119.40/868,274.10 = 342,340.20/x
  3. Step 3: Cross multiply
    579,119.40x = 868,274.10 × 342,340.20
  4. Step 4: Simplify right side
    579,119.40x = 297,245,129,048.82
  5. Step 5: Solve for x
    x = 297,245,129,048.82/579,119.40
  6. Step 6: Final answer
    x = 513,270.89

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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.