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Finding the Fourth Proportional to 609,799.12, 914,210.22 and 289,790.40

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Solution

The fourth proportional to 609,799.12, 914,210.22 and 289,790.40 is: 434,453.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,799.12 : 914,210.22 = 289,790.40 : x
  2. Step 2: Convert to fraction form
    609,799.12/914,210.22 = 289,790.40/x
  3. Step 3: Cross multiply
    609,799.12x = 914,210.22 × 289,790.40
  4. Step 4: Simplify right side
    609,799.12x = 264,929,345,337.89
  5. Step 5: Solve for x
    x = 264,929,345,337.89/609,799.12
  6. Step 6: Final answer
    x = 434,453.47

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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.