Home / 691,399.13-954,096.59-389,612.57

Finding the Fourth Proportional to 691,399.13, 954,096.59 and 389,612.57

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Solution

The fourth proportional to 691,399.13, 954,096.59 and 389,612.57 is: 537,646.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,399.13 : 954,096.59 = 389,612.57 : x
  2. Step 2: Convert to fraction form
    691,399.13/954,096.59 = 389,612.57/x
  3. Step 3: Cross multiply
    691,399.13x = 954,096.59 × 389,612.57
  4. Step 4: Simplify right side
    691,399.13x = 371,728,022,510.07
  5. Step 5: Solve for x
    x = 371,728,022,510.07/691,399.13
  6. Step 6: Final answer
    x = 537,646.07

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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.