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Finding the Fourth Proportional to 609,798.12, 914,208.72 and 289,789.40

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Solution

The fourth proportional to 609,798.12, 914,208.72 and 289,789.40 is: 434,451.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,798.12 : 914,208.72 = 289,789.40 : x
  2. Step 2: Convert to fraction form
    609,798.12/914,208.72 = 289,789.40/x
  3. Step 3: Cross multiply
    609,798.12x = 914,208.72 × 289,789.40
  4. Step 4: Simplify right side
    609,798.12x = 264,927,996,443.57
  5. Step 5: Solve for x
    x = 264,927,996,443.57/609,798.12
  6. Step 6: Final answer
    x = 434,451.97

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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.