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Finding the Fourth Proportional to 822,774.72, 1,135,414.08 and 465,078.72

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Solution

The fourth proportional to 822,774.72, 1,135,414.08 and 465,078.72 is: 641,800.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,774.72 : 1,135,414.08 = 465,078.72 : x
  2. Step 2: Convert to fraction form
    822,774.72/1,135,414.08 = 465,078.72/x
  3. Step 3: Cross multiply
    822,774.72x = 1,135,414.08 × 465,078.72
  4. Step 4: Simplify right side
    822,774.72x = 528,056,926,996.38
  5. Step 5: Solve for x
    x = 528,056,926,996.38/822,774.72
  6. Step 6: Final answer
    x = 641,800.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.