Home / 676,815.10-1,015,222.65-256,104.70

Finding the Fourth Proportional to 676,815.10, 1,015,222.65 and 256,104.70

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Solution

The fourth proportional to 676,815.10, 1,015,222.65 and 256,104.70 is: 384,157.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,815.10 : 1,015,222.65 = 256,104.70 : x
  2. Step 2: Convert to fraction form
    676,815.10/1,015,222.65 = 256,104.70/x
  3. Step 3: Cross multiply
    676,815.10x = 1,015,222.65 × 256,104.70
  4. Step 4: Simplify right side
    676,815.10x = 260,003,292,211.46
  5. Step 5: Solve for x
    x = 260,003,292,211.46/676,815.10
  6. Step 6: Final answer
    x = 384,157.05

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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.