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Finding the Fourth Proportional to 680,856.92, 939,585.20 and 408,929.44

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Solution

The fourth proportional to 680,856.92, 939,585.20 and 408,929.44 is: 564,324.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,856.92 : 939,585.20 = 408,929.44 : x
  2. Step 2: Convert to fraction form
    680,856.92/939,585.20 = 408,929.44/x
  3. Step 3: Cross multiply
    680,856.92x = 939,585.20 × 408,929.44
  4. Step 4: Simplify right side
    680,856.92x = 384,224,048,419.22
  5. Step 5: Solve for x
    x = 384,224,048,419.22/680,856.92
  6. Step 6: Final answer
    x = 564,324.22

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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.