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Finding the Fourth Proportional to 519,319, 716,660.22 and 368,678.44

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Solution

The fourth proportional to 519,319, 716,660.22 and 368,678.44 is: 508,776.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,319 : 716,660.22 = 368,678.44 : x
  2. Step 2: Convert to fraction form
    519,319/716,660.22 = 368,678.44/x
  3. Step 3: Cross multiply
    519,319x = 716,660.22 × 368,678.44
  4. Step 4: Simplify right side
    519,319x = 264,217,171,919.66
  5. Step 5: Solve for x
    x = 264,217,171,919.66/519,319
  6. Step 6: Final answer
    x = 508,776.25

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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.