Home / 919,418.91-1,380,407.76-470,449.68

Finding the Fourth Proportional to 919,418.91, 1,380,407.76 and 470,449.68

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Solution

The fourth proportional to 919,418.91, 1,380,407.76 and 470,449.68 is: 706,329.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,418.91 : 1,380,407.76 = 470,449.68 : x
  2. Step 2: Convert to fraction form
    919,418.91/1,380,407.76 = 470,449.68/x
  3. Step 3: Cross multiply
    919,418.91x = 1,380,407.76 × 470,449.68
  4. Step 4: Simplify right side
    919,418.91x = 649,412,388,961.52
  5. Step 5: Solve for x
    x = 649,412,388,961.52/919,418.91
  6. Step 6: Final answer
    x = 706,329.16

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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.