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Finding the Fourth Proportional to 387,598.77, 534,734.46 and 285,868.44

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Solution

The fourth proportional to 387,598.77, 534,734.46 and 285,868.44 is: 394,386.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,598.77 : 534,734.46 = 285,868.44 : x
  2. Step 2: Convert to fraction form
    387,598.77/534,734.46 = 285,868.44/x
  3. Step 3: Cross multiply
    387,598.77x = 534,734.46 × 285,868.44
  4. Step 4: Simplify right side
    387,598.77x = 152,863,705,894.44
  5. Step 5: Solve for x
    x = 152,863,705,894.44/387,598.77
  6. Step 6: Final answer
    x = 394,386.46

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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.