Home / 709,221.78-1,064,029.50-393,900.12

Finding the Fourth Proportional to 709,221.78, 1,064,029.50 and 393,900.12

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Solution

The fourth proportional to 709,221.78, 1,064,029.50 and 393,900.12 is: 590,959.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,221.78 : 1,064,029.50 = 393,900.12 : x
  2. Step 2: Convert to fraction form
    709,221.78/1,064,029.50 = 393,900.12/x
  3. Step 3: Cross multiply
    709,221.78x = 1,064,029.50 × 393,900.12
  4. Step 4: Simplify right side
    709,221.78x = 419,121,347,733.54
  5. Step 5: Solve for x
    x = 419,121,347,733.54/709,221.78
  6. Step 6: Final answer
    x = 590,959.50

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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.