Home / 454,310.10-681,465.15-420,095.70

Finding the Fourth Proportional to 454,310.10, 681,465.15 and 420,095.70

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Solution

The fourth proportional to 454,310.10, 681,465.15 and 420,095.70 is: 630,143.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,310.10 : 681,465.15 = 420,095.70 : x
  2. Step 2: Convert to fraction form
    454,310.10/681,465.15 = 420,095.70/x
  3. Step 3: Cross multiply
    454,310.10x = 681,465.15 × 420,095.70
  4. Step 4: Simplify right side
    454,310.10x = 286,280,579,214.86
  5. Step 5: Solve for x
    x = 286,280,579,214.86/454,310.10
  6. Step 6: Final answer
    x = 630,143.55

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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.