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Finding the Fourth Proportional to 648,124.40, 972,186.60 and 419,801.60

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Solution

The fourth proportional to 648,124.40, 972,186.60 and 419,801.60 is: 629,702.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,124.40 : 972,186.60 = 419,801.60 : x
  2. Step 2: Convert to fraction form
    648,124.40/972,186.60 = 419,801.60/x
  3. Step 3: Cross multiply
    648,124.40x = 972,186.60 × 419,801.60
  4. Step 4: Simplify right side
    648,124.40x = 408,125,490,178.56
  5. Step 5: Solve for x
    x = 408,125,490,178.56/648,124.40
  6. Step 6: Final answer
    x = 629,702.40

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Double scale
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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.