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Finding the Fourth Proportional to 911,935.38, 1,367,931 and 312,888.26

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Solution

The fourth proportional to 911,935.38, 1,367,931 and 312,888.26 is: 469,341.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,935.38 : 1,367,931 = 312,888.26 : x
  2. Step 2: Convert to fraction form
    911,935.38/1,367,931 = 312,888.26/x
  3. Step 3: Cross multiply
    911,935.38x = 1,367,931 × 312,888.26
  4. Step 4: Simplify right side
    911,935.38x = 428,009,550,390.06
  5. Step 5: Solve for x
    x = 428,009,550,390.06/911,935.38
  6. Step 6: Final answer
    x = 469,341.97

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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.