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Finding the Fourth Proportional to 539,903, 745,066.20 and 313,563.08

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Solution

The fourth proportional to 539,903, 745,066.20 and 313,563.08 is: 432,717.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,903 : 745,066.20 = 313,563.08 : x
  2. Step 2: Convert to fraction form
    539,903/745,066.20 = 313,563.08/x
  3. Step 3: Cross multiply
    539,903x = 745,066.20 × 313,563.08
  4. Step 4: Simplify right side
    539,903x = 233,625,252,475.90
  5. Step 5: Solve for x
    x = 233,625,252,475.90/539,903
  6. Step 6: Final answer
    x = 432,717.09

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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.