Home / 740,856.20-1,111,802.70-320,433.80

Finding the Fourth Proportional to 740,856.20, 1,111,802.70 and 320,433.80

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Solution

The fourth proportional to 740,856.20, 1,111,802.70 and 320,433.80 is: 480,874.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,856.20 : 1,111,802.70 = 320,433.80 : x
  2. Step 2: Convert to fraction form
    740,856.20/1,111,802.70 = 320,433.80/x
  3. Step 3: Cross multiply
    740,856.20x = 1,111,802.70 × 320,433.80
  4. Step 4: Simplify right side
    740,856.20x = 356,259,164,011.26
  5. Step 5: Solve for x
    x = 356,259,164,011.26/740,856.20
  6. Step 6: Final answer
    x = 480,874.92

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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.