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Finding the Fourth Proportional to 624,364.44, 861,661.86 and 352,478.40

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Solution

The fourth proportional to 624,364.44, 861,661.86 and 352,478.40 is: 486,442.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,364.44 : 861,661.86 = 352,478.40 : x
  2. Step 2: Convert to fraction form
    624,364.44/861,661.86 = 352,478.40/x
  3. Step 3: Cross multiply
    624,364.44x = 861,661.86 × 352,478.40
  4. Step 4: Simplify right side
    624,364.44x = 303,717,193,753.82
  5. Step 5: Solve for x
    x = 303,717,193,753.82/624,364.44
  6. Step 6: Final answer
    x = 486,442.17

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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.