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Finding the Fourth Proportional to 665,117.85, 997,676.78 and 665,117.85

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Solution

The fourth proportional to 665,117.85, 997,676.78 and 665,117.85 is: 997,676.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,117.85 : 997,676.78 = 665,117.85 : x
  2. Step 2: Convert to fraction form
    665,117.85/997,676.78 = 665,117.85/x
  3. Step 3: Cross multiply
    665,117.85x = 997,676.78 × 665,117.85
  4. Step 4: Simplify right side
    665,117.85x = 663,572,631,582.93
  5. Step 5: Solve for x
    x = 663,572,631,582.93/665,117.85
  6. Step 6: Final answer
    x = 997,676.78

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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.