Home / 657,770.31-907,723.98-355,964.31

Finding the Fourth Proportional to 657,770.31, 907,723.98 and 355,964.31

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Solution

The fourth proportional to 657,770.31, 907,723.98 and 355,964.31 is: 491,231.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,770.31 : 907,723.98 = 355,964.31 : x
  2. Step 2: Convert to fraction form
    657,770.31/907,723.98 = 355,964.31/x
  3. Step 3: Cross multiply
    657,770.31x = 907,723.98 × 355,964.31
  4. Step 4: Simplify right side
    657,770.31x = 323,117,340,211.15
  5. Step 5: Solve for x
    x = 323,117,340,211.15/657,770.31
  6. Step 6: Final answer
    x = 491,231.26

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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.