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Finding the Fourth Proportional to 605,315.70, 907,973.55 and 539,997.30

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Solution

The fourth proportional to 605,315.70, 907,973.55 and 539,997.30 is: 809,995.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,315.70 : 907,973.55 = 539,997.30 : x
  2. Step 2: Convert to fraction form
    605,315.70/907,973.55 = 539,997.30/x
  3. Step 3: Cross multiply
    605,315.70x = 907,973.55 × 539,997.30
  4. Step 4: Simplify right side
    605,315.70x = 490,303,265,471.42
  5. Step 5: Solve for x
    x = 490,303,265,471.42/605,315.70
  6. Step 6: Final answer
    x = 809,995.95

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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.