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Finding the Fourth Proportional to 641,718, 885,804.12 and 373,446

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Solution

The fourth proportional to 641,718, 885,804.12 and 373,446 is: 515,491.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,718 : 885,804.12 = 373,446 : x
  2. Step 2: Convert to fraction form
    641,718/885,804.12 = 373,446/x
  3. Step 3: Cross multiply
    641,718x = 885,804.12 × 373,446
  4. Step 4: Simplify right side
    641,718x = 330,800,005,397.52
  5. Step 5: Solve for x
    x = 330,800,005,397.52/641,718
  6. Step 6: Final answer
    x = 515,491.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.