Home / 786,017.90-1,179,026.85-280,820.90

Finding the Fourth Proportional to 786,017.90, 1,179,026.85 and 280,820.90

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Solution

The fourth proportional to 786,017.90, 1,179,026.85 and 280,820.90 is: 421,231.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,017.90 : 1,179,026.85 = 280,820.90 : x
  2. Step 2: Convert to fraction form
    786,017.90/1,179,026.85 = 280,820.90/x
  3. Step 3: Cross multiply
    786,017.90x = 1,179,026.85 × 280,820.90
  4. Step 4: Simplify right side
    786,017.90x = 331,095,381,141.17
  5. Step 5: Solve for x
    x = 331,095,381,141.17/786,017.90
  6. Step 6: Final answer
    x = 421,231.35

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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.