Home / 657,983.42-987,340.06-321,026.86

Finding the Fourth Proportional to 657,983.42, 987,340.06 and 321,026.86

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Solution

The fourth proportional to 657,983.42, 987,340.06 and 321,026.86 is: 481,718.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,983.42 : 987,340.06 = 321,026.86 : x
  2. Step 2: Convert to fraction form
    657,983.42/987,340.06 = 321,026.86/x
  3. Step 3: Cross multiply
    657,983.42x = 987,340.06 × 321,026.86
  4. Step 4: Simplify right side
    657,983.42x = 316,962,674,277.31
  5. Step 5: Solve for x
    x = 316,962,674,277.31/657,983.42
  6. Step 6: Final answer
    x = 481,718.33

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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.