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Finding the Fourth Proportional to 578,463.60, 867,695.40 and 389,506.80

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Solution

The fourth proportional to 578,463.60, 867,695.40 and 389,506.80 is: 584,260.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,463.60 : 867,695.40 = 389,506.80 : x
  2. Step 2: Convert to fraction form
    578,463.60/867,695.40 = 389,506.80/x
  3. Step 3: Cross multiply
    578,463.60x = 867,695.40 × 389,506.80
  4. Step 4: Simplify right side
    578,463.60x = 337,973,258,628.72
  5. Step 5: Solve for x
    x = 337,973,258,628.72/578,463.60
  6. Step 6: Final answer
    x = 584,260.20

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Similar ratio
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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.