Home / 663,420.31-914,796.53-448,186.66

Finding the Fourth Proportional to 663,420.31, 914,796.53 and 448,186.66

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Solution

The fourth proportional to 663,420.31, 914,796.53 and 448,186.66 is: 618,008.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,420.31 : 914,796.53 = 448,186.66 : x
  2. Step 2: Convert to fraction form
    663,420.31/914,796.53 = 448,186.66/x
  3. Step 3: Cross multiply
    663,420.31x = 914,796.53 × 448,186.66
  4. Step 4: Simplify right side
    663,420.31x = 409,999,598,513.07
  5. Step 5: Solve for x
    x = 409,999,598,513.07/663,420.31
  6. Step 6: Final answer
    x = 618,008.82

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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.