Home / 784,492.20-1,176,155.10-429,906.60

Finding the Fourth Proportional to 784,492.20, 1,176,155.10 and 429,906.60

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Solution

The fourth proportional to 784,492.20, 1,176,155.10 and 429,906.60 is: 644,540.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,492.20 : 1,176,155.10 = 429,906.60 : x
  2. Step 2: Convert to fraction form
    784,492.20/1,176,155.10 = 429,906.60/x
  3. Step 3: Cross multiply
    784,492.20x = 1,176,155.10 × 429,906.60
  4. Step 4: Simplify right side
    784,492.20x = 505,636,840,113.66
  5. Step 5: Solve for x
    x = 505,636,840,113.66/784,492.20
  6. Step 6: Final answer
    x = 644,540.30

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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.