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Finding the Fourth Proportional to 696,328, 960,971.52 and 394,619.20

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Solution

The fourth proportional to 696,328, 960,971.52 and 394,619.20 is: 544,596.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,328 : 960,971.52 = 394,619.20 : x
  2. Step 2: Convert to fraction form
    696,328/960,971.52 = 394,619.20/x
  3. Step 3: Cross multiply
    696,328x = 960,971.52 × 394,619.20
  4. Step 4: Simplify right side
    696,328x = 379,217,812,445.18
  5. Step 5: Solve for x
    x = 379,217,812,445.18/696,328
  6. Step 6: Final answer
    x = 544,596.53

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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.