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Finding the Fourth Proportional to 740,967.20, 1,111,969.20 and 320,544.80

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Solution

The fourth proportional to 740,967.20, 1,111,969.20 and 320,544.80 is: 481,041.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,967.20 : 1,111,969.20 = 320,544.80 : x
  2. Step 2: Convert to fraction form
    740,967.20/1,111,969.20 = 320,544.80/x
  3. Step 3: Cross multiply
    740,967.20x = 1,111,969.20 × 320,544.80
  4. Step 4: Simplify right side
    740,967.20x = 356,435,944,820.16
  5. Step 5: Solve for x
    x = 356,435,944,820.16/740,967.20
  6. Step 6: Final answer
    x = 481,041.46

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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.