Home / 661,748.82-913,308.04-371,391.36

Finding the Fourth Proportional to 661,748.82, 913,308.04 and 371,391.36

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Solution

The fourth proportional to 661,748.82, 913,308.04 and 371,391.36 is: 512,573.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,748.82 : 913,308.04 = 371,391.36 : x
  2. Step 2: Convert to fraction form
    661,748.82/913,308.04 = 371,391.36/x
  3. Step 3: Cross multiply
    661,748.82x = 913,308.04 × 371,391.36
  4. Step 4: Simplify right side
    661,748.82x = 339,194,715,074.53
  5. Step 5: Solve for x
    x = 339,194,715,074.53/661,748.82
  6. Step 6: Final answer
    x = 512,573.21

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1.5x scale

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.