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Finding the Fourth Proportional to 911,447.64, 1,367,466.71 and 438,169.91

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Solution

The fourth proportional to 911,447.64, 1,367,466.71 and 438,169.91 is: 657,396.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,447.64 : 1,367,466.71 = 438,169.91 : x
  2. Step 2: Convert to fraction form
    911,447.64/1,367,466.71 = 438,169.91/x
  3. Step 3: Cross multiply
    911,447.64x = 1,367,466.71 × 438,169.91
  4. Step 4: Simplify right side
    911,447.64x = 599,182,756,220.51
  5. Step 5: Solve for x
    x = 599,182,756,220.51/911,447.64
  6. Step 6: Final answer
    x = 657,396.79

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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.