Home / 691,942.85-954,881.51-386,019.21

Finding the Fourth Proportional to 691,942.85, 954,881.51 and 386,019.21

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Solution

The fourth proportional to 691,942.85, 954,881.51 and 386,019.21 is: 532,706.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,942.85 : 954,881.51 = 386,019.21 : x
  2. Step 2: Convert to fraction form
    691,942.85/954,881.51 = 386,019.21/x
  3. Step 3: Cross multiply
    691,942.85x = 954,881.51 × 386,019.21
  4. Step 4: Simplify right side
    691,942.85x = 368,602,604,203.71
  5. Step 5: Solve for x
    x = 368,602,604,203.71/691,942.85
  6. Step 6: Final answer
    x = 532,706.72

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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.