Home / 463,228.12-639,653.75-291,432.43

Finding the Fourth Proportional to 463,228.12, 639,653.75 and 291,432.43

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Solution

The fourth proportional to 463,228.12, 639,653.75 and 291,432.43 is: 402,427.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,228.12 : 639,653.75 = 291,432.43 : x
  2. Step 2: Convert to fraction form
    463,228.12/639,653.75 = 291,432.43/x
  3. Step 3: Cross multiply
    463,228.12x = 639,653.75 × 291,432.43
  4. Step 4: Simplify right side
    463,228.12x = 186,415,846,721.11
  5. Step 5: Solve for x
    x = 186,415,846,721.11/463,228.12
  6. Step 6: Final answer
    x = 402,427.74

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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.