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Finding the Fourth Proportional to 551,428.20, 827,142.30 and 528,100.20

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Solution

The fourth proportional to 551,428.20, 827,142.30 and 528,100.20 is: 792,150.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,428.20 : 827,142.30 = 528,100.20 : x
  2. Step 2: Convert to fraction form
    551,428.20/827,142.30 = 528,100.20/x
  3. Step 3: Cross multiply
    551,428.20x = 827,142.30 × 528,100.20
  4. Step 4: Simplify right side
    551,428.20x = 436,814,014,058.46
  5. Step 5: Solve for x
    x = 436,814,014,058.46/551,428.20
  6. Step 6: Final answer
    x = 792,150.30

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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.