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Finding the Fourth Proportional to 514,992.90, 772,489.35 and 493,997.70

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Solution

The fourth proportional to 514,992.90, 772,489.35 and 493,997.70 is: 740,996.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,992.90 : 772,489.35 = 493,997.70 : x
  2. Step 2: Convert to fraction form
    514,992.90/772,489.35 = 493,997.70/x
  3. Step 3: Cross multiply
    514,992.90x = 772,489.35 × 493,997.70
  4. Step 4: Simplify right side
    514,992.90x = 381,607,962,174.50
  5. Step 5: Solve for x
    x = 381,607,962,174.50/514,992.90
  6. Step 6: Final answer
    x = 740,996.55

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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.