Home / 856,394.35-1,284,878.30-280,044.20

Finding the Fourth Proportional to 856,394.35, 1,284,878.30 and 280,044.20

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Solution

The fourth proportional to 856,394.35, 1,284,878.30 and 280,044.20 is: 420,160.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,394.35 : 1,284,878.30 = 280,044.20 : x
  2. Step 2: Convert to fraction form
    856,394.35/1,284,878.30 = 280,044.20/x
  3. Step 3: Cross multiply
    856,394.35x = 1,284,878.30 × 280,044.20
  4. Step 4: Simplify right side
    856,394.35x = 359,822,717,432.84
  5. Step 5: Solve for x
    x = 359,822,717,432.84/856,394.35
  6. Step 6: Final answer
    x = 420,160.08

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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.