Home / 635,981.76-877,289.40-397,103.04

Finding the Fourth Proportional to 635,981.76, 877,289.40 and 397,103.04

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Solution

The fourth proportional to 635,981.76, 877,289.40 and 397,103.04 is: 547,774.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,981.76 : 877,289.40 = 397,103.04 : x
  2. Step 2: Convert to fraction form
    635,981.76/877,289.40 = 397,103.04/x
  3. Step 3: Cross multiply
    635,981.76x = 877,289.40 × 397,103.04
  4. Step 4: Simplify right side
    635,981.76x = 348,374,287,699.78
  5. Step 5: Solve for x
    x = 348,374,287,699.78/635,981.76
  6. Step 6: Final answer
    x = 547,774.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.