Home / 880,031.10-1,320,143.85-280,890.30

Finding the Fourth Proportional to 880,031.10, 1,320,143.85 and 280,890.30

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Solution

The fourth proportional to 880,031.10, 1,320,143.85 and 280,890.30 is: 421,366.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,031.10 : 1,320,143.85 = 280,890.30 : x
  2. Step 2: Convert to fraction form
    880,031.10/1,320,143.85 = 280,890.30/x
  3. Step 3: Cross multiply
    880,031.10x = 1,320,143.85 × 280,890.30
  4. Step 4: Simplify right side
    880,031.10x = 370,815,602,069.66
  5. Step 5: Solve for x
    x = 370,815,602,069.66/880,031.10
  6. Step 6: Final answer
    x = 421,366.47

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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.