Home / 890,759.10-1,336,138.65-780,167.10

Finding the Fourth Proportional to 890,759.10, 1,336,138.65 and 780,167.10

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Solution

The fourth proportional to 890,759.10, 1,336,138.65 and 780,167.10 is: 1,170,250.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,759.10 : 1,336,138.65 = 780,167.10 : x
  2. Step 2: Convert to fraction form
    890,759.10/1,336,138.65 = 780,167.10/x
  3. Step 3: Cross multiply
    890,759.10x = 1,336,138.65 × 780,167.10
  4. Step 4: Simplify right side
    890,759.10x = 1,042,411,415,768.41
  5. Step 5: Solve for x
    x = 1,042,411,415,768.41/890,759.10
  6. Step 6: Final answer
    x = 1,170,250.65

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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.