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Finding the Fourth Proportional to 660,169.10, 990,581.70 and 260,822.90

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Solution

The fourth proportional to 660,169.10, 990,581.70 and 260,822.90 is: 391,363.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,169.10 : 990,581.70 = 260,822.90 : x
  2. Step 2: Convert to fraction form
    660,169.10/990,581.70 = 260,822.90/x
  3. Step 3: Cross multiply
    660,169.10x = 990,581.70 × 260,822.90
  4. Step 4: Simplify right side
    660,169.10x = 258,366,391,680.93
  5. Step 5: Solve for x
    x = 258,366,391,680.93/660,169.10
  6. Step 6: Final answer
    x = 391,363.96

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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.