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Finding the Fourth Proportional to 578,417.40, 867,626.10 and 574,480.80

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Solution

The fourth proportional to 578,417.40, 867,626.10 and 574,480.80 is: 861,721.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,417.40 : 867,626.10 = 574,480.80 : x
  2. Step 2: Convert to fraction form
    578,417.40/867,626.10 = 574,480.80/x
  3. Step 3: Cross multiply
    578,417.40x = 867,626.10 × 574,480.80
  4. Step 4: Simplify right side
    578,417.40x = 498,434,536,028.88
  5. Step 5: Solve for x
    x = 498,434,536,028.88/578,417.40
  6. Step 6: Final answer
    x = 861,721.20

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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.