Home / 691,720.56-954,787.50-405,333.72

Finding the Fourth Proportional to 691,720.56, 954,787.50 and 405,333.72

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Solution

The fourth proportional to 691,720.56, 954,787.50 and 405,333.72 is: 559,485.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,720.56 : 954,787.50 = 405,333.72 : x
  2. Step 2: Convert to fraction form
    691,720.56/954,787.50 = 405,333.72/x
  3. Step 3: Cross multiply
    691,720.56x = 954,787.50 × 405,333.72
  4. Step 4: Simplify right side
    691,720.56x = 387,007,569,184.50
  5. Step 5: Solve for x
    x = 387,007,569,184.50/691,720.56
  6. Step 6: Final answer
    x = 559,485.42

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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.