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Finding the Fourth Proportional to 680,919.84, 939,362.16 and 462,861.36

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Solution

The fourth proportional to 680,919.84, 939,362.16 and 462,861.36 is: 638,539.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,919.84 : 939,362.16 = 462,861.36 : x
  2. Step 2: Convert to fraction form
    680,919.84/939,362.16 = 462,861.36/x
  3. Step 3: Cross multiply
    680,919.84x = 939,362.16 × 462,861.36
  4. Step 4: Simplify right side
    680,919.84x = 434,794,446,910.14
  5. Step 5: Solve for x
    x = 434,794,446,910.14/680,919.84
  6. Step 6: Final answer
    x = 638,539.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.