Home / 454,301.10-681,451.65-420,086.70

Finding the Fourth Proportional to 454,301.10, 681,451.65 and 420,086.70

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Solution

The fourth proportional to 454,301.10, 681,451.65 and 420,086.70 is: 630,130.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,301.10 : 681,451.65 = 420,086.70 : x
  2. Step 2: Convert to fraction form
    454,301.10/681,451.65 = 420,086.70/x
  3. Step 3: Cross multiply
    454,301.10x = 681,451.65 × 420,086.70
  4. Step 4: Simplify right side
    454,301.10x = 286,268,774,858.06
  5. Step 5: Solve for x
    x = 286,268,774,858.06/454,301.10
  6. Step 6: Final answer
    x = 630,130.05

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.