Home / 690,672-1,036,156.20-391,296

Finding the Fourth Proportional to 690,672, 1,036,156.20 and 391,296

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Solution

The fourth proportional to 690,672, 1,036,156.20 and 391,296 is: 587,027.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,672 : 1,036,156.20 = 391,296 : x
  2. Step 2: Convert to fraction form
    690,672/1,036,156.20 = 391,296/x
  3. Step 3: Cross multiply
    690,672x = 1,036,156.20 × 391,296
  4. Step 4: Simplify right side
    690,672x = 405,443,776,435.20
  5. Step 5: Solve for x
    x = 405,443,776,435.20/690,672
  6. Step 6: Final answer
    x = 587,027.96

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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.