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Finding the Fourth Proportional to 609,631.23, 910,738.98 and 394,647.76

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Solution

The fourth proportional to 609,631.23, 910,738.98 and 394,647.76 is: 589,571.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,631.23 : 910,738.98 = 394,647.76 : x
  2. Step 2: Convert to fraction form
    609,631.23/910,738.98 = 394,647.76/x
  3. Step 3: Cross multiply
    609,631.23x = 910,738.98 × 394,647.76
  4. Step 4: Simplify right side
    609,631.23x = 359,421,096,428.45
  5. Step 5: Solve for x
    x = 359,421,096,428.45/609,631.23
  6. Step 6: Final answer
    x = 589,571.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.