Home / 657,945.12-907,967.10-356,139.12

Finding the Fourth Proportional to 657,945.12, 907,967.10 and 356,139.12

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Solution

The fourth proportional to 657,945.12, 907,967.10 and 356,139.12 is: 491,473.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,945.12 : 907,967.10 = 356,139.12 : x
  2. Step 2: Convert to fraction form
    657,945.12/907,967.10 = 356,139.12/x
  3. Step 3: Cross multiply
    657,945.12x = 907,967.10 × 356,139.12
  4. Step 4: Simplify right side
    657,945.12x = 323,362,603,982.95
  5. Step 5: Solve for x
    x = 323,362,603,982.95/657,945.12
  6. Step 6: Final answer
    x = 491,473.52

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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.