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Finding the Fourth Proportional to 636,421.85, 954,002.18 and 298,858.24

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Solution

The fourth proportional to 636,421.85, 954,002.18 and 298,858.24 is: 447,991.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,421.85 : 954,002.18 = 298,858.24 : x
  2. Step 2: Convert to fraction form
    636,421.85/954,002.18 = 298,858.24/x
  3. Step 3: Cross multiply
    636,421.85x = 954,002.18 × 298,858.24
  4. Step 4: Simplify right side
    636,421.85x = 285,111,407,700.95
  5. Step 5: Solve for x
    x = 285,111,407,700.95/636,421.85
  6. Step 6: Final answer
    x = 447,991.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.