Home / 771,489.36-1,157,418.72-321,960.24

Finding the Fourth Proportional to 771,489.36, 1,157,418.72 and 321,960.24

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Solution

The fourth proportional to 771,489.36, 1,157,418.72 and 321,960.24 is: 483,017.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,489.36 : 1,157,418.72 = 321,960.24 : x
  2. Step 2: Convert to fraction form
    771,489.36/1,157,418.72 = 321,960.24/x
  3. Step 3: Cross multiply
    771,489.36x = 1,157,418.72 × 321,960.24
  4. Step 4: Simplify right side
    771,489.36x = 372,642,808,871.69
  5. Step 5: Solve for x
    x = 372,642,808,871.69/771,489.36
  6. Step 6: Final answer
    x = 483,017.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.