Home / 671,835.28-1,005,385.12-419,234.72

Finding the Fourth Proportional to 671,835.28, 1,005,385.12 and 419,234.72

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Solution

The fourth proportional to 671,835.28, 1,005,385.12 and 419,234.72 is: 627,374.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,835.28 : 1,005,385.12 = 419,234.72 : x
  2. Step 2: Convert to fraction form
    671,835.28/1,005,385.12 = 419,234.72/x
  3. Step 3: Cross multiply
    671,835.28x = 1,005,385.12 × 419,234.72
  4. Step 4: Simplify right side
    671,835.28x = 421,492,349,275.37
  5. Step 5: Solve for x
    x = 421,492,349,275.37/671,835.28
  6. Step 6: Final answer
    x = 627,374.54

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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.