Home / 463,224.12-639,648.23-291,428.43

Finding the Fourth Proportional to 463,224.12, 639,648.23 and 291,428.43

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Solution

The fourth proportional to 463,224.12, 639,648.23 and 291,428.43 is: 402,422.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,224.12 : 639,648.23 = 291,428.43 : x
  2. Step 2: Convert to fraction form
    463,224.12/639,648.23 = 291,428.43/x
  3. Step 3: Cross multiply
    463,224.12x = 639,648.23 × 291,428.43
  4. Step 4: Simplify right side
    463,224.12x = 186,411,679,421.18
  5. Step 5: Solve for x
    x = 186,411,679,421.18/463,224.12
  6. Step 6: Final answer
    x = 402,422.23

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1.5x scale

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.