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Finding the Fourth Proportional to 385,989.64, 579,874.38 and 370,046.60

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Solution

The fourth proportional to 385,989.64, 579,874.38 and 370,046.60 is: 555,923.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,989.64 : 579,874.38 = 370,046.60 : x
  2. Step 2: Convert to fraction form
    385,989.64/579,874.38 = 370,046.60/x
  3. Step 3: Cross multiply
    385,989.64x = 579,874.38 × 370,046.60
  4. Step 4: Simplify right side
    385,989.64x = 214,580,542,746.11
  5. Step 5: Solve for x
    x = 214,580,542,746.11/385,989.64
  6. Step 6: Final answer
    x = 555,923.06

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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.