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Finding the Fourth Proportional to 682,808.25, 942,304.95 and 381,002.25

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Solution

The fourth proportional to 682,808.25, 942,304.95 and 381,002.25 is: 525,799.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,808.25 : 942,304.95 = 381,002.25 : x
  2. Step 2: Convert to fraction form
    682,808.25/942,304.95 = 381,002.25/x
  3. Step 3: Cross multiply
    682,808.25x = 942,304.95 × 381,002.25
  4. Step 4: Simplify right side
    682,808.25x = 359,020,306,136.14
  5. Step 5: Solve for x
    x = 359,020,306,136.14/682,808.25
  6. Step 6: Final answer
    x = 525,799.60

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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.