Home / 985,649.92-1,359,495.24-640,846.59

Finding the Fourth Proportional to 985,649.92, 1,359,495.24 and 640,846.59

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Solution

The fourth proportional to 985,649.92, 1,359,495.24 and 640,846.59 is: 883,912.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,649.92 : 1,359,495.24 = 640,846.59 : x
  2. Step 2: Convert to fraction form
    985,649.92/1,359,495.24 = 640,846.59/x
  3. Step 3: Cross multiply
    985,649.92x = 1,359,495.24 × 640,846.59
  4. Step 4: Simplify right side
    985,649.92x = 871,227,884,778.71
  5. Step 5: Solve for x
    x = 871,227,884,778.71/985,649.92
  6. Step 6: Final answer
    x = 883,912.10

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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.