Home / 402,926.40-603,660.60-319,237.20

Finding the Fourth Proportional to 402,926.40, 603,660.60 and 319,237.20

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Solution

The fourth proportional to 402,926.40, 603,660.60 and 319,237.20 is: 478,278.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,926.40 : 603,660.60 = 319,237.20 : x
  2. Step 2: Convert to fraction form
    402,926.40/603,660.60 = 319,237.20/x
  3. Step 3: Cross multiply
    402,926.40x = 603,660.60 × 319,237.20
  4. Step 4: Simplify right side
    402,926.40x = 192,710,919,694.32
  5. Step 5: Solve for x
    x = 192,710,919,694.32/402,926.40
  6. Step 6: Final answer
    x = 478,278.22

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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.