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Finding the Fourth Proportional to 544,057.60, 816,086.40 and 385,427.20

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Solution

The fourth proportional to 544,057.60, 816,086.40 and 385,427.20 is: 578,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,057.60 : 816,086.40 = 385,427.20 : x
  2. Step 2: Convert to fraction form
    544,057.60/816,086.40 = 385,427.20/x
  3. Step 3: Cross multiply
    544,057.60x = 816,086.40 × 385,427.20
  4. Step 4: Simplify right side
    544,057.60x = 314,541,896,110.08
  5. Step 5: Solve for x
    x = 314,541,896,110.08/544,057.60
  6. Step 6: Final answer
    x = 578,140.80

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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.