Home / 657,789.32-907,749.27-355,983.32

Finding the Fourth Proportional to 657,789.32, 907,749.27 and 355,983.32

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Solution

The fourth proportional to 657,789.32, 907,749.27 and 355,983.32 is: 491,256.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,789.32 : 907,749.27 = 355,983.32 : x
  2. Step 2: Convert to fraction form
    657,789.32/907,749.27 = 355,983.32/x
  3. Step 3: Cross multiply
    657,789.32x = 907,749.27 × 355,983.32
  4. Step 4: Simplify right side
    657,789.32x = 323,143,598,862.18
  5. Step 5: Solve for x
    x = 323,143,598,862.18/657,789.32
  6. Step 6: Final answer
    x = 491,256.99

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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.