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Finding the Fourth Proportional to 624,328.60, 861,612.52 and 352,442.56

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Solution

The fourth proportional to 624,328.60, 861,612.52 and 352,442.56 is: 486,392.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,328.60 : 861,612.52 = 352,442.56 : x
  2. Step 2: Convert to fraction form
    624,328.60/861,612.52 = 352,442.56/x
  3. Step 3: Cross multiply
    624,328.60x = 861,612.52 × 352,442.56
  4. Step 4: Simplify right side
    624,328.60x = 303,668,922,276.85
  5. Step 5: Solve for x
    x = 303,668,922,276.85/624,328.60
  6. Step 6: Final answer
    x = 486,392.78

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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.