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Finding the Fourth Proportional to 519,504, 716,916.48 and 281,040

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Solution

The fourth proportional to 519,504, 716,916.48 and 281,040 is: 387,835.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,504 : 716,916.48 = 281,040 : x
  2. Step 2: Convert to fraction form
    519,504/716,916.48 = 281,040/x
  3. Step 3: Cross multiply
    519,504x = 716,916.48 × 281,040
  4. Step 4: Simplify right side
    519,504x = 201,482,207,539.20
  5. Step 5: Solve for x
    x = 201,482,207,539.20/519,504
  6. Step 6: Final answer
    x = 387,835.72

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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.