Home / 921,983.20-1,272,420.78-559,499.29

Finding the Fourth Proportional to 921,983.20, 1,272,420.78 and 559,499.29

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Solution

The fourth proportional to 921,983.20, 1,272,420.78 and 559,499.29 is: 772,159.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,983.20 : 1,272,420.78 = 559,499.29 : x
  2. Step 2: Convert to fraction form
    921,983.20/1,272,420.78 = 559,499.29/x
  3. Step 3: Cross multiply
    921,983.20x = 1,272,420.78 × 559,499.29
  4. Step 4: Simplify right side
    921,983.20x = 711,918,522,991.25
  5. Step 5: Solve for x
    x = 711,918,522,991.25/921,983.20
  6. Step 6: Final answer
    x = 772,159.97

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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.