Home / 709,601.79-1,064,872.79-389,976.87

Finding the Fourth Proportional to 709,601.79, 1,064,872.79 and 389,976.87

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Solution

The fourth proportional to 709,601.79, 1,064,872.79 and 389,976.87 is: 585,223.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,601.79 : 1,064,872.79 = 389,976.87 : x
  2. Step 2: Convert to fraction form
    709,601.79/1,064,872.79 = 389,976.87/x
  3. Step 3: Cross multiply
    709,601.79x = 1,064,872.79 × 389,976.87
  4. Step 4: Simplify right side
    709,601.79x = 415,275,755,642.48
  5. Step 5: Solve for x
    x = 415,275,755,642.48/709,601.79
  6. Step 6: Final answer
    x = 585,223.66

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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.