Home / 887,052.70-1,330,579.05-512,638.30

Finding the Fourth Proportional to 887,052.70, 1,330,579.05 and 512,638.30

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Solution

The fourth proportional to 887,052.70, 1,330,579.05 and 512,638.30 is: 768,957.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,052.70 : 1,330,579.05 = 512,638.30 : x
  2. Step 2: Convert to fraction form
    887,052.70/1,330,579.05 = 512,638.30/x
  3. Step 3: Cross multiply
    887,052.70x = 1,330,579.05 × 512,638.30
  4. Step 4: Simplify right side
    887,052.70x = 682,105,782,207.62
  5. Step 5: Solve for x
    x = 682,105,782,207.62/887,052.70
  6. Step 6: Final answer
    x = 768,957.45

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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.