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Finding the Fourth Proportional to 664,787.84, 917,305.96 and 374,384.12

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Solution

The fourth proportional to 664,787.84, 917,305.96 and 374,384.12 is: 516,593.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,787.84 : 917,305.96 = 374,384.12 : x
  2. Step 2: Convert to fraction form
    664,787.84/917,305.96 = 374,384.12/x
  3. Step 3: Cross multiply
    664,787.84x = 917,305.96 × 374,384.12
  4. Step 4: Simplify right side
    664,787.84x = 343,424,784,605.36
  5. Step 5: Solve for x
    x = 343,424,784,605.36/664,787.84
  6. Step 6: Final answer
    x = 516,593.06

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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.