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Finding the Fourth Proportional to 631,248.40, 946,872.60 and 395,318.80

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Solution

The fourth proportional to 631,248.40, 946,872.60 and 395,318.80 is: 592,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,248.40 : 946,872.60 = 395,318.80 : x
  2. Step 2: Convert to fraction form
    631,248.40/946,872.60 = 395,318.80/x
  3. Step 3: Cross multiply
    631,248.40x = 946,872.60 × 395,318.80
  4. Step 4: Simplify right side
    631,248.40x = 374,316,539,984.88
  5. Step 5: Solve for x
    x = 374,316,539,984.88/631,248.40
  6. Step 6: Final answer
    x = 592,978.20

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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.