Home / 879,576.90-1,319,365.35-280,581.90

Finding the Fourth Proportional to 879,576.90, 1,319,365.35 and 280,581.90

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Solution

The fourth proportional to 879,576.90, 1,319,365.35 and 280,581.90 is: 420,872.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,576.90 : 1,319,365.35 = 280,581.90 : x
  2. Step 2: Convert to fraction form
    879,576.90/1,319,365.35 = 280,581.90/x
  3. Step 3: Cross multiply
    879,576.90x = 1,319,365.35 × 280,581.90
  4. Step 4: Simplify right side
    879,576.90x = 370,190,036,697.17
  5. Step 5: Solve for x
    x = 370,190,036,697.17/879,576.90
  6. Step 6: Final answer
    x = 420,872.85

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Double scale
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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.