Home / 399,018.15-598,527.91-319,561.48

Finding the Fourth Proportional to 399,018.15, 598,527.91 and 319,561.48

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Solution

The fourth proportional to 399,018.15, 598,527.91 and 319,561.48 is: 479,342.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,018.15 : 598,527.91 = 319,561.48 : x
  2. Step 2: Convert to fraction form
    399,018.15/598,527.91 = 319,561.48/x
  3. Step 3: Cross multiply
    399,018.15x = 598,527.91 × 319,561.48
  4. Step 4: Simplify right side
    399,018.15x = 191,266,463,306.39
  5. Step 5: Solve for x
    x = 191,266,463,306.39/399,018.15
  6. Step 6: Final answer
    x = 479,342.77

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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.