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Finding the Fourth Proportional to 387,449.53, 579,096.95 and 349,412.13

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Solution

The fourth proportional to 387,449.53, 579,096.95 and 349,412.13 is: 522,244.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,449.53 : 579,096.95 = 349,412.13 : x
  2. Step 2: Convert to fraction form
    387,449.53/579,096.95 = 349,412.13/x
  3. Step 3: Cross multiply
    387,449.53x = 579,096.95 × 349,412.13
  4. Step 4: Simplify right side
    387,449.53x = 202,343,497,028.94
  5. Step 5: Solve for x
    x = 202,343,497,028.94/387,449.53
  6. Step 6: Final answer
    x = 522,244.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.