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Finding the Fourth Proportional to 556,220.80, 834,331.20 and 343,644.40

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Solution

The fourth proportional to 556,220.80, 834,331.20 and 343,644.40 is: 515,466.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,220.80 : 834,331.20 = 343,644.40 : x
  2. Step 2: Convert to fraction form
    556,220.80/834,331.20 = 343,644.40/x
  3. Step 3: Cross multiply
    556,220.80x = 834,331.20 × 343,644.40
  4. Step 4: Simplify right side
    556,220.80x = 286,713,244,625.28
  5. Step 5: Solve for x
    x = 286,713,244,625.28/556,220.80
  6. Step 6: Final answer
    x = 515,466.60

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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.