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Finding the Fourth Proportional to 438,052.90, 657,079.35 and 393,816.10

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Solution

The fourth proportional to 438,052.90, 657,079.35 and 393,816.10 is: 590,724.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,052.90 : 657,079.35 = 393,816.10 : x
  2. Step 2: Convert to fraction form
    438,052.90/657,079.35 = 393,816.10/x
  3. Step 3: Cross multiply
    438,052.90x = 657,079.35 × 393,816.10
  4. Step 4: Simplify right side
    438,052.90x = 258,768,427,007.54
  5. Step 5: Solve for x
    x = 258,768,427,007.54/438,052.90
  6. Step 6: Final answer
    x = 590,724.15

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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.