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Finding the Fourth Proportional to 644,812.70, 903,670.90 and 644,812.70

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Solution

The fourth proportional to 644,812.70, 903,670.90 and 644,812.70 is: 903,670.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,812.70 : 903,670.90 = 644,812.70 : x
  2. Step 2: Convert to fraction form
    644,812.70/903,670.90 = 644,812.70/x
  3. Step 3: Cross multiply
    644,812.70x = 903,670.90 × 644,812.70
  4. Step 4: Simplify right side
    644,812.70x = 582,698,472,940.43
  5. Step 5: Solve for x
    x = 582,698,472,940.43/644,812.70
  6. Step 6: Final answer
    x = 903,670.90

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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.