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Finding the Fourth Proportional to 606,642.80, 909,964.20 and 488,544.80

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Solution

The fourth proportional to 606,642.80, 909,964.20 and 488,544.80 is: 732,817.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,642.80 : 909,964.20 = 488,544.80 : x
  2. Step 2: Convert to fraction form
    606,642.80/909,964.20 = 488,544.80/x
  3. Step 3: Cross multiply
    606,642.80x = 909,964.20 × 488,544.80
  4. Step 4: Simplify right side
    606,642.80x = 444,558,278,096.16
  5. Step 5: Solve for x
    x = 444,558,278,096.16/606,642.80
  6. Step 6: Final answer
    x = 732,817.20

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Double scale
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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.