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Finding the Fourth Proportional to 515,099.40, 772,649.10 and 488,855.40

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Solution

The fourth proportional to 515,099.40, 772,649.10 and 488,855.40 is: 733,283.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,099.40 : 772,649.10 = 488,855.40 : x
  2. Step 2: Convert to fraction form
    515,099.40/772,649.10 = 488,855.40/x
  3. Step 3: Cross multiply
    515,099.40x = 772,649.10 × 488,855.40
  4. Step 4: Simplify right side
    515,099.40x = 377,713,684,840.14
  5. Step 5: Solve for x
    x = 377,713,684,840.14/515,099.40
  6. Step 6: Final answer
    x = 733,283.10

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Half scale
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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.