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Finding the Fourth Proportional to 605,315.70, 907,973.55 and 206,406.90

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Solution

The fourth proportional to 605,315.70, 907,973.55 and 206,406.90 is: 309,610.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,315.70 : 907,973.55 = 206,406.90 : x
  2. Step 2: Convert to fraction form
    605,315.70/907,973.55 = 206,406.90/x
  3. Step 3: Cross multiply
    605,315.70x = 907,973.55 × 206,406.90
  4. Step 4: Simplify right side
    605,315.70x = 187,412,005,737.50
  5. Step 5: Solve for x
    x = 187,412,005,737.50/605,315.70
  6. Step 6: Final answer
    x = 309,610.35

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Similar ratio
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1.5x scale

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.