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Finding the Fourth Proportional to 659,976.75, 910,778.85 and 358,170.75

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Solution

The fourth proportional to 659,976.75, 910,778.85 and 358,170.75 is: 494,281.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,976.75 : 910,778.85 = 358,170.75 : x
  2. Step 2: Convert to fraction form
    659,976.75/910,778.85 = 358,170.75/x
  3. Step 3: Cross multiply
    659,976.75x = 910,778.85 × 358,170.75
  4. Step 4: Simplify right side
    659,976.75x = 326,214,343,788.64
  5. Step 5: Solve for x
    x = 326,214,343,788.64/659,976.75
  6. Step 6: Final answer
    x = 494,281.57

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Double scale
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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.