Home / 790,420.95-1,185,820.05-257,942.94

Finding the Fourth Proportional to 790,420.95, 1,185,820.05 and 257,942.94

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Solution

The fourth proportional to 790,420.95, 1,185,820.05 and 257,942.94 is: 386,975.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,420.95 : 1,185,820.05 = 257,942.94 : x
  2. Step 2: Convert to fraction form
    790,420.95/1,185,820.05 = 257,942.94/x
  3. Step 3: Cross multiply
    790,420.95x = 1,185,820.05 × 257,942.94
  4. Step 4: Simplify right side
    790,420.95x = 305,873,910,007.95
  5. Step 5: Solve for x
    x = 305,873,910,007.95/790,420.95
  6. Step 6: Final answer
    x = 386,975.97

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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.