Home / 790,378.43-1,185,562.78-257,899.82

Finding the Fourth Proportional to 790,378.43, 1,185,562.78 and 257,899.82

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Solution

The fourth proportional to 790,378.43, 1,185,562.78 and 257,899.82 is: 386,848.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,378.43 : 1,185,562.78 = 257,899.82 : x
  2. Step 2: Convert to fraction form
    790,378.43/1,185,562.78 = 257,899.82/x
  3. Step 3: Cross multiply
    790,378.43x = 1,185,562.78 × 257,899.82
  4. Step 4: Simplify right side
    790,378.43x = 305,756,420,988.14
  5. Step 5: Solve for x
    x = 305,756,420,988.14/790,378.43
  6. Step 6: Final answer
    x = 386,848.14

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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.