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Finding the Fourth Proportional to 636,287.16, 878,093.16 and 345,918.36

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Solution

The fourth proportional to 636,287.16, 878,093.16 and 345,918.36 is: 477,376.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,287.16 : 878,093.16 = 345,918.36 : x
  2. Step 2: Convert to fraction form
    636,287.16/878,093.16 = 345,918.36/x
  3. Step 3: Cross multiply
    636,287.16x = 878,093.16 × 345,918.36
  4. Step 4: Simplify right side
    636,287.16x = 303,748,545,834.42
  5. Step 5: Solve for x
    x = 303,748,545,834.42/636,287.16
  6. Step 6: Final answer
    x = 477,376.51

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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.