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Finding the Fourth Proportional to 519,320.64, 716,695.92 and 292,961.28

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Solution

The fourth proportional to 519,320.64, 716,695.92 and 292,961.28 is: 404,305.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,320.64 : 716,695.92 = 292,961.28 : x
  2. Step 2: Convert to fraction form
    519,320.64/716,695.92 = 292,961.28/x
  3. Step 3: Cross multiply
    519,320.64x = 716,695.92 × 292,961.28
  4. Step 4: Simplify right side
    519,320.64x = 209,964,154,093.98
  5. Step 5: Solve for x
    x = 209,964,154,093.98/519,320.64
  6. Step 6: Final answer
    x = 404,305.43

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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.