Home / 657,384.12-985,631.22-257,775.48

Finding the Fourth Proportional to 657,384.12, 985,631.22 and 257,775.48

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Solution

The fourth proportional to 657,384.12, 985,631.22 and 257,775.48 is: 386,488.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,384.12 : 985,631.22 = 257,775.48 : x
  2. Step 2: Convert to fraction form
    657,384.12/985,631.22 = 257,775.48/x
  3. Step 3: Cross multiply
    657,384.12x = 985,631.22 × 257,775.48
  4. Step 4: Simplify right side
    657,384.12x = 254,071,560,838.49
  5. Step 5: Solve for x
    x = 254,071,560,838.49/657,384.12
  6. Step 6: Final answer
    x = 386,488.74

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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.