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Finding the Fourth Proportional to 519,307.88, 716,647.03 and 280,843.88

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Solution

The fourth proportional to 519,307.88, 716,647.03 and 280,843.88 is: 387,565.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,307.88 : 716,647.03 = 280,843.88 : x
  2. Step 2: Convert to fraction form
    519,307.88/716,647.03 = 280,843.88/x
  3. Step 3: Cross multiply
    519,307.88x = 716,647.03 × 280,843.88
  4. Step 4: Simplify right side
    519,307.88x = 201,265,928,210.33
  5. Step 5: Solve for x
    x = 201,265,928,210.33/519,307.88
  6. Step 6: Final answer
    x = 387,565.72

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1.5x scale

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.