Home / 579,271.40-868,907.10-379,687.40

Finding the Fourth Proportional to 579,271.40, 868,907.10 and 379,687.40

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Solution

The fourth proportional to 579,271.40, 868,907.10 and 379,687.40 is: 569,531.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,271.40 : 868,907.10 = 379,687.40 : x
  2. Step 2: Convert to fraction form
    579,271.40/868,907.10 = 379,687.40/x
  3. Step 3: Cross multiply
    579,271.40x = 868,907.10 × 379,687.40
  4. Step 4: Simplify right side
    579,271.40x = 329,913,077,640.54
  5. Step 5: Solve for x
    x = 329,913,077,640.54/579,271.40
  6. Step 6: Final answer
    x = 569,531.10

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Half scale
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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.