Home / 657,923.72-907,936.09-356,117.72

Finding the Fourth Proportional to 657,923.72, 907,936.09 and 356,117.72

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Solution

The fourth proportional to 657,923.72, 907,936.09 and 356,117.72 is: 491,443.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,923.72 : 907,936.09 = 356,117.72 : x
  2. Step 2: Convert to fraction form
    657,923.72/907,936.09 = 356,117.72/x
  3. Step 3: Cross multiply
    657,923.72x = 907,936.09 × 356,117.72
  4. Step 4: Simplify right side
    657,923.72x = 323,332,124,846.54
  5. Step 5: Solve for x
    x = 323,332,124,846.54/657,923.72
  6. Step 6: Final answer
    x = 491,443.18

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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.