Home / 498,459.78-687,886.29-272,106.90

Finding the Fourth Proportional to 498,459.78, 687,886.29 and 272,106.90

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Solution

The fourth proportional to 498,459.78, 687,886.29 and 272,106.90 is: 375,513.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,459.78 : 687,886.29 = 272,106.90 : x
  2. Step 2: Convert to fraction form
    498,459.78/687,886.29 = 272,106.90/x
  3. Step 3: Cross multiply
    498,459.78x = 687,886.29 × 272,106.90
  4. Step 4: Simplify right side
    498,459.78x = 187,178,605,924.40
  5. Step 5: Solve for x
    x = 187,178,605,924.40/498,459.78
  6. Step 6: Final answer
    x = 375,513.96

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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.