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Finding the Fourth Proportional to 682,309.84, 941,544.96 and 376,389.76

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Solution

The fourth proportional to 682,309.84, 941,544.96 and 376,389.76 is: 519,394.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,309.84 : 941,544.96 = 376,389.76 : x
  2. Step 2: Convert to fraction form
    682,309.84/941,544.96 = 376,389.76/x
  3. Step 3: Cross multiply
    682,309.84x = 941,544.96 × 376,389.76
  4. Step 4: Simplify right side
    682,309.84x = 354,387,881,523.61
  5. Step 5: Solve for x
    x = 354,387,881,523.61/682,309.84
  6. Step 6: Final answer
    x = 519,394.36

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Double scale
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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.