Home / 771,021.51-1,155,908.75-322,086.21

Finding the Fourth Proportional to 771,021.51, 1,155,908.75 and 322,086.21

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Solution

The fourth proportional to 771,021.51, 1,155,908.75 and 322,086.21 is: 482,868.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,021.51 : 1,155,908.75 = 322,086.21 : x
  2. Step 2: Convert to fraction form
    771,021.51/1,155,908.75 = 322,086.21/x
  3. Step 3: Cross multiply
    771,021.51x = 1,155,908.75 × 322,086.21
  4. Step 4: Simplify right side
    771,021.51x = 372,302,266,782.91
  5. Step 5: Solve for x
    x = 372,302,266,782.91/771,021.51
  6. Step 6: Final answer
    x = 482,868.85

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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.