Home / 887,071.70-1,330,607.55-512,657.30

Finding the Fourth Proportional to 887,071.70, 1,330,607.55 and 512,657.30

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Solution

The fourth proportional to 887,071.70, 1,330,607.55 and 512,657.30 is: 768,985.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,071.70 : 1,330,607.55 = 512,657.30 : x
  2. Step 2: Convert to fraction form
    887,071.70/1,330,607.55 = 512,657.30/x
  3. Step 3: Cross multiply
    887,071.70x = 1,330,607.55 × 512,657.30
  4. Step 4: Simplify right side
    887,071.70x = 682,145,673,942.62
  5. Step 5: Solve for x
    x = 682,145,673,942.62/887,071.70
  6. Step 6: Final answer
    x = 768,985.95

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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.