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Finding the Fourth Proportional to 633,620, 874,180.32 and 361,492.40

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Solution

The fourth proportional to 633,620, 874,180.32 and 361,492.40 is: 498,736.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,620 : 874,180.32 = 361,492.40 : x
  2. Step 2: Convert to fraction form
    633,620/874,180.32 = 361,492.40/x
  3. Step 3: Cross multiply
    633,620x = 874,180.32 × 361,492.40
  4. Step 4: Simplify right side
    633,620x = 316,009,541,909.57
  5. Step 5: Solve for x
    x = 316,009,541,909.57/633,620
  6. Step 6: Final answer
    x = 498,736.69

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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.