Home / 856,392.10-1,284,874.92-280,041.95

Finding the Fourth Proportional to 856,392.10, 1,284,874.92 and 280,041.95

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Solution

The fourth proportional to 856,392.10, 1,284,874.92 and 280,041.95 is: 420,156.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,392.10 : 1,284,874.92 = 280,041.95 : x
  2. Step 2: Convert to fraction form
    856,392.10/1,284,874.92 = 280,041.95/x
  3. Step 3: Cross multiply
    856,392.10x = 1,284,874.92 × 280,041.95
  4. Step 4: Simplify right side
    856,392.10x = 359,818,881,315.08
  5. Step 5: Solve for x
    x = 359,818,881,315.08/856,392.10
  6. Step 6: Final answer
    x = 420,156.70

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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.