Home / 811,432.08-1,217,258.83-338,006.72

Finding the Fourth Proportional to 811,432.08, 1,217,258.83 and 338,006.72

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Solution

The fourth proportional to 811,432.08, 1,217,258.83 and 338,006.72 is: 507,056.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,432.08 : 1,217,258.83 = 338,006.72 : x
  2. Step 2: Convert to fraction form
    811,432.08/1,217,258.83 = 338,006.72/x
  3. Step 3: Cross multiply
    811,432.08x = 1,217,258.83 × 338,006.72
  4. Step 4: Simplify right side
    811,432.08x = 411,441,667,984.99
  5. Step 5: Solve for x
    x = 411,441,667,984.99/811,432.08
  6. Step 6: Final answer
    x = 507,056.20

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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.