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Finding the Fourth Proportional to 644,812.20, 903,670.20 and 644,812.20

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Solution

The fourth proportional to 644,812.20, 903,670.20 and 644,812.20 is: 903,670.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,812.20 : 903,670.20 = 644,812.20 : x
  2. Step 2: Convert to fraction form
    644,812.20/903,670.20 = 644,812.20/x
  3. Step 3: Cross multiply
    644,812.20x = 903,670.20 × 644,812.20
  4. Step 4: Simplify right side
    644,812.20x = 582,697,569,736.44
  5. Step 5: Solve for x
    x = 582,697,569,736.44/644,812.20
  6. Step 6: Final answer
    x = 903,670.20

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.