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Finding the Fourth Proportional to 519,260.70, 778,891.05 and 283,064.70

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Solution

The fourth proportional to 519,260.70, 778,891.05 and 283,064.70 is: 424,597.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,260.70 : 778,891.05 = 283,064.70 : x
  2. Step 2: Convert to fraction form
    519,260.70/778,891.05 = 283,064.70/x
  3. Step 3: Cross multiply
    519,260.70x = 778,891.05 × 283,064.70
  4. Step 4: Simplify right side
    519,260.70x = 220,476,561,400.94
  5. Step 5: Solve for x
    x = 220,476,561,400.94/519,260.70
  6. Step 6: Final answer
    x = 424,597.05

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Double scale
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Similar ratio
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1.5x scale

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.