Home / 642,918.04-887,247.93-356,464.78

Finding the Fourth Proportional to 642,918.04, 887,247.93 and 356,464.78

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Solution

The fourth proportional to 642,918.04, 887,247.93 and 356,464.78 is: 491,933.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,918.04 : 887,247.93 = 356,464.78 : x
  2. Step 2: Convert to fraction form
    642,918.04/887,247.93 = 356,464.78/x
  3. Step 3: Cross multiply
    642,918.04x = 887,247.93 × 356,464.78
  4. Step 4: Simplify right side
    642,918.04x = 316,272,638,172.91
  5. Step 5: Solve for x
    x = 316,272,638,172.91/642,918.04
  6. Step 6: Final answer
    x = 491,933.06

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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.