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Finding the Fourth Proportional to 660,007.20, 990,010.80 and 450,055.20

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Solution

The fourth proportional to 660,007.20, 990,010.80 and 450,055.20 is: 675,082.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,007.20 : 990,010.80 = 450,055.20 : x
  2. Step 2: Convert to fraction form
    660,007.20/990,010.80 = 450,055.20/x
  3. Step 3: Cross multiply
    660,007.20x = 990,010.80 × 450,055.20
  4. Step 4: Simplify right side
    660,007.20x = 445,559,508,596.16
  5. Step 5: Solve for x
    x = 445,559,508,596.16/660,007.20
  6. Step 6: Final answer
    x = 675,082.80

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Similar ratio
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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.