Home / 528,723.70-729,651.03-313,864.58

Finding the Fourth Proportional to 528,723.70, 729,651.03 and 313,864.58

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Solution

The fourth proportional to 528,723.70, 729,651.03 and 313,864.58 is: 433,140.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,723.70 : 729,651.03 = 313,864.58 : x
  2. Step 2: Convert to fraction form
    528,723.70/729,651.03 = 313,864.58/x
  3. Step 3: Cross multiply
    528,723.70x = 729,651.03 × 313,864.58
  4. Step 4: Simplify right side
    528,723.70x = 229,011,614,077.52
  5. Step 5: Solve for x
    x = 229,011,614,077.52/528,723.70
  6. Step 6: Final answer
    x = 433,140.44

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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.