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Finding the Fourth Proportional to 911,434.14, 1,367,345.07 and 312,234.48

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Solution

The fourth proportional to 911,434.14, 1,367,345.07 and 312,234.48 is: 468,418.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,434.14 : 1,367,345.07 = 312,234.48 : x
  2. Step 2: Convert to fraction form
    911,434.14/1,367,345.07 = 312,234.48/x
  3. Step 3: Cross multiply
    911,434.14x = 1,367,345.07 × 312,234.48
  4. Step 4: Simplify right side
    911,434.14x = 426,932,276,912.01
  5. Step 5: Solve for x
    x = 426,932,276,912.01/911,434.14
  6. Step 6: Final answer
    x = 468,418.13

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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.