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Finding the Fourth Proportional to 579,410.70, 869,116.05 and 486,098.70

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Solution

The fourth proportional to 579,410.70, 869,116.05 and 486,098.70 is: 729,148.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,410.70 : 869,116.05 = 486,098.70 : x
  2. Step 2: Convert to fraction form
    579,410.70/869,116.05 = 486,098.70/x
  3. Step 3: Cross multiply
    579,410.70x = 869,116.05 × 486,098.70
  4. Step 4: Simplify right side
    579,410.70x = 422,476,182,054.14
  5. Step 5: Solve for x
    x = 422,476,182,054.14/579,410.70
  6. Step 6: Final answer
    x = 729,148.05

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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.