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Finding the Fourth Proportional to 387,429.42, 534,436.74 and 360,029.46

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Solution

The fourth proportional to 387,429.42, 534,436.74 and 360,029.46 is: 496,640.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,429.42 : 534,436.74 = 360,029.46 : x
  2. Step 2: Convert to fraction form
    387,429.42/534,436.74 = 360,029.46/x
  3. Step 3: Cross multiply
    387,429.42x = 534,436.74 × 360,029.46
  4. Step 4: Simplify right side
    387,429.42x = 192,412,970,906.36
  5. Step 5: Solve for x
    x = 192,412,970,906.36/387,429.42
  6. Step 6: Final answer
    x = 496,640.06

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1.5x scale

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.