Home / 686,825.04-947,867.13-380,930.57

Finding the Fourth Proportional to 686,825.04, 947,867.13 and 380,930.57

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Solution

The fourth proportional to 686,825.04, 947,867.13 and 380,930.57 is: 525,711.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,825.04 : 947,867.13 = 380,930.57 : x
  2. Step 2: Convert to fraction form
    686,825.04/947,867.13 = 380,930.57/x
  3. Step 3: Cross multiply
    686,825.04x = 947,867.13 × 380,930.57
  4. Step 4: Simplify right side
    686,825.04x = 361,071,561,375.83
  5. Step 5: Solve for x
    x = 361,071,561,375.83/686,825.04
  6. Step 6: Final answer
    x = 525,711.12

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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.