Home / 498,420.63-687,820.29-272,066.13

Finding the Fourth Proportional to 498,420.63, 687,820.29 and 272,066.13

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Solution

The fourth proportional to 498,420.63, 687,820.29 and 272,066.13 is: 375,451.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,420.63 : 687,820.29 = 272,066.13 : x
  2. Step 2: Convert to fraction form
    498,420.63/687,820.29 = 272,066.13/x
  3. Step 3: Cross multiply
    498,420.63x = 687,820.29 × 272,066.13
  4. Step 4: Simplify right side
    498,420.63x = 187,132,604,435.78
  5. Step 5: Solve for x
    x = 187,132,604,435.78/498,420.63
  6. Step 6: Final answer
    x = 375,451.16

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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.