Home / 691,719.04-954,586.88-389,912.96

Finding the Fourth Proportional to 691,719.04, 954,586.88 and 389,912.96

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Solution

The fourth proportional to 691,719.04, 954,586.88 and 389,912.96 is: 538,088.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,719.04 : 954,586.88 = 389,912.96 : x
  2. Step 2: Convert to fraction form
    691,719.04/954,586.88 = 389,912.96/x
  3. Step 3: Cross multiply
    691,719.04x = 954,586.88 × 389,912.96
  4. Step 4: Simplify right side
    691,719.04x = 372,205,795,957.97
  5. Step 5: Solve for x
    x = 372,205,795,957.97/691,719.04
  6. Step 6: Final answer
    x = 538,088.12

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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.