Home / 686,324.39-947,184.33-380,496.68

Finding the Fourth Proportional to 686,324.39, 947,184.33 and 380,496.68

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Solution

The fourth proportional to 686,324.39, 947,184.33 and 380,496.68 is: 525,116.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,324.39 : 947,184.33 = 380,496.68 : x
  2. Step 2: Convert to fraction form
    686,324.39/947,184.33 = 380,496.68/x
  3. Step 3: Cross multiply
    686,324.39x = 947,184.33 × 380,496.68
  4. Step 4: Simplify right side
    686,324.39x = 360,400,495,280.99
  5. Step 5: Solve for x
    x = 360,400,495,280.99/686,324.39
  6. Step 6: Final answer
    x = 525,116.84

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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.