Home / 726,026.90-1,087,296.21-405,390.83

Finding the Fourth Proportional to 726,026.90, 1,087,296.21 and 405,390.83

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Solution

The fourth proportional to 726,026.90, 1,087,296.21 and 405,390.83 is: 607,112.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,026.90 : 1,087,296.21 = 405,390.83 : x
  2. Step 2: Convert to fraction form
    726,026.90/1,087,296.21 = 405,390.83/x
  3. Step 3: Cross multiply
    726,026.90x = 1,087,296.21 × 405,390.83
  4. Step 4: Simplify right side
    726,026.90x = 440,779,907,591.27
  5. Step 5: Solve for x
    x = 440,779,907,591.27/726,026.90
  6. Step 6: Final answer
    x = 607,112.37

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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.