Home / 657,278.10-985,539.96-257,450.76

Finding the Fourth Proportional to 657,278.10, 985,539.96 and 257,450.76

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Solution

The fourth proportional to 657,278.10, 985,539.96 and 257,450.76 is: 386,028.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,278.10 : 985,539.96 = 257,450.76 : x
  2. Step 2: Convert to fraction form
    657,278.10/985,539.96 = 257,450.76/x
  3. Step 3: Cross multiply
    657,278.10x = 985,539.96 × 257,450.76
  4. Step 4: Simplify right side
    657,278.10x = 253,728,011,712.37
  5. Step 5: Solve for x
    x = 253,728,011,712.37/657,278.10
  6. Step 6: Final answer
    x = 386,028.40

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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.