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Finding the Fourth Proportional to 424,585.90, 636,878.85 and 109,043.11

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Solution

The fourth proportional to 424,585.90, 636,878.85 and 109,043.11 is: 163,564.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,585.90 : 636,878.85 = 109,043.11 : x
  2. Step 2: Convert to fraction form
    424,585.90/636,878.85 = 109,043.11/x
  3. Step 3: Cross multiply
    424,585.90x = 636,878.85 × 109,043.11
  4. Step 4: Simplify right side
    424,585.90x = 69,447,251,497.78
  5. Step 5: Solve for x
    x = 69,447,251,497.78/424,585.90
  6. Step 6: Final answer
    x = 163,564.67

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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.