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Finding the Fourth Proportional to 641,095.48, 884,656.65 and 354,544.24

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Solution

The fourth proportional to 641,095.48, 884,656.65 and 354,544.24 is: 489,240.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,095.48 : 884,656.65 = 354,544.24 : x
  2. Step 2: Convert to fraction form
    641,095.48/884,656.65 = 354,544.24/x
  3. Step 3: Cross multiply
    641,095.48x = 884,656.65 × 354,544.24
  4. Step 4: Simplify right side
    641,095.48x = 313,649,919,635.20
  5. Step 5: Solve for x
    x = 313,649,919,635.20/641,095.48
  6. Step 6: Final answer
    x = 489,240.57

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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.