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Finding the Fourth Proportional to 995,875.10, 1,493,812.65 and 820,915.10

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Solution

The fourth proportional to 995,875.10, 1,493,812.65 and 820,915.10 is: 1,231,372.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    995,875.10 : 1,493,812.65 = 820,915.10 : x
  2. Step 2: Convert to fraction form
    995,875.10/1,493,812.65 = 820,915.10/x
  3. Step 3: Cross multiply
    995,875.10x = 1,493,812.65 × 820,915.10
  4. Step 4: Simplify right side
    995,875.10x = 1,226,293,360,956.01
  5. Step 5: Solve for x
    x = 1,226,293,360,956.01/995,875.10
  6. Step 6: Final answer
    x = 1,231,372.65

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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.