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Finding the Fourth Proportional to 658,383.10, 987,902.70 and 374,291.80

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Solution

The fourth proportional to 658,383.10, 987,902.70 and 374,291.80 is: 561,624.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,383.10 : 987,902.70 = 374,291.80 : x
  2. Step 2: Convert to fraction form
    658,383.10/987,902.70 = 374,291.80/x
  3. Step 3: Cross multiply
    658,383.10x = 987,902.70 × 374,291.80
  4. Step 4: Simplify right side
    658,383.10x = 369,763,879,807.86
  5. Step 5: Solve for x
    x = 369,763,879,807.86/658,383.10
  6. Step 6: Final answer
    x = 561,624.20

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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.