Home / 686,359.28-947,210.76-395,862.81

Finding the Fourth Proportional to 686,359.28, 947,210.76 and 395,862.81

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Solution

The fourth proportional to 686,359.28, 947,210.76 and 395,862.81 is: 546,310.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,359.28 : 947,210.76 = 395,862.81 : x
  2. Step 2: Convert to fraction form
    686,359.28/947,210.76 = 395,862.81/x
  3. Step 3: Cross multiply
    686,359.28x = 947,210.76 × 395,862.81
  4. Step 4: Simplify right side
    686,359.28x = 374,965,513,115.84
  5. Step 5: Solve for x
    x = 374,965,513,115.84/686,359.28
  6. Step 6: Final answer
    x = 546,310.84

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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.