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Finding the Fourth Proportional to 874,952.21, 1,312,537.80 and 342,404.48

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Solution

The fourth proportional to 874,952.21, 1,312,537.80 and 342,404.48 is: 513,649.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,952.21 : 1,312,537.80 = 342,404.48 : x
  2. Step 2: Convert to fraction form
    874,952.21/1,312,537.80 = 342,404.48/x
  3. Step 3: Cross multiply
    874,952.21x = 1,312,537.80 × 342,404.48
  4. Step 4: Simplify right side
    874,952.21x = 449,418,822,889.34
  5. Step 5: Solve for x
    x = 449,418,822,889.34/874,952.21
  6. Step 6: Final answer
    x = 513,649.57

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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.