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Finding the Fourth Proportional to 519,320, 716,661.60 and 368,679.44

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Solution

The fourth proportional to 519,320, 716,661.60 and 368,679.44 is: 508,777.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,320 : 716,661.60 = 368,679.44 : x
  2. Step 2: Convert to fraction form
    519,320/716,661.60 = 368,679.44/x
  3. Step 3: Cross multiply
    519,320x = 716,661.60 × 368,679.44
  4. Step 4: Simplify right side
    519,320x = 264,218,397,357.50
  5. Step 5: Solve for x
    x = 264,218,397,357.50/519,320
  6. Step 6: Final answer
    x = 508,777.63

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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.