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Finding the Fourth Proportional to 519,712.80, 779,180.40 and 283,322.40

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Solution

The fourth proportional to 519,712.80, 779,180.40 and 283,322.40 is: 424,771.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,712.80 : 779,180.40 = 283,322.40 : x
  2. Step 2: Convert to fraction form
    519,712.80/779,180.40 = 283,322.40/x
  3. Step 3: Cross multiply
    519,712.80x = 779,180.40 × 283,322.40
  4. Step 4: Simplify right side
    519,712.80x = 220,759,260,960.96
  5. Step 5: Solve for x
    x = 220,759,260,960.96/519,712.80
  6. Step 6: Final answer
    x = 424,771.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.