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Finding the Fourth Proportional to 539,721.82, 744,796.60 and 297,999.21

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Solution

The fourth proportional to 539,721.82, 744,796.60 and 297,999.21 is: 411,228.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,721.82 : 744,796.60 = 297,999.21 : x
  2. Step 2: Convert to fraction form
    539,721.82/744,796.60 = 297,999.21/x
  3. Step 3: Cross multiply
    539,721.82x = 744,796.60 × 297,999.21
  4. Step 4: Simplify right side
    539,721.82x = 221,948,796,426.83
  5. Step 5: Solve for x
    x = 221,948,796,426.83/539,721.82
  6. Step 6: Final answer
    x = 411,228.13

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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.