Home / 740,491.20-1,111,255.20-320,068.80

Finding the Fourth Proportional to 740,491.20, 1,111,255.20 and 320,068.80

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Solution

The fourth proportional to 740,491.20, 1,111,255.20 and 320,068.80 is: 480,327.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,491.20 : 1,111,255.20 = 320,068.80 : x
  2. Step 2: Convert to fraction form
    740,491.20/1,111,255.20 = 320,068.80/x
  3. Step 3: Cross multiply
    740,491.20x = 1,111,255.20 × 320,068.80
  4. Step 4: Simplify right side
    740,491.20x = 355,678,118,357.76
  5. Step 5: Solve for x
    x = 355,678,118,357.76/740,491.20
  6. Step 6: Final answer
    x = 480,327.27

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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.