Home / 397,830.80-596,746.20-319,098.80

Finding the Fourth Proportional to 397,830.80, 596,746.20 and 319,098.80

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Solution

The fourth proportional to 397,830.80, 596,746.20 and 319,098.80 is: 478,648.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,830.80 : 596,746.20 = 319,098.80 : x
  2. Step 2: Convert to fraction form
    397,830.80/596,746.20 = 319,098.80/x
  3. Step 3: Cross multiply
    397,830.80x = 596,746.20 × 319,098.80
  4. Step 4: Simplify right side
    397,830.80x = 190,420,996,324.56
  5. Step 5: Solve for x
    x = 190,420,996,324.56/397,830.80
  6. Step 6: Final answer
    x = 478,648.20

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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.