Home / 657,201.85-985,802.78-432,815.65

Finding the Fourth Proportional to 657,201.85, 985,802.78 and 432,815.65

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Solution

The fourth proportional to 657,201.85, 985,802.78 and 432,815.65 is: 649,223.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,201.85 : 985,802.78 = 432,815.65 : x
  2. Step 2: Convert to fraction form
    657,201.85/985,802.78 = 432,815.65/x
  3. Step 3: Cross multiply
    657,201.85x = 985,802.78 × 432,815.65
  4. Step 4: Simplify right side
    657,201.85x = 426,670,870,997.51
  5. Step 5: Solve for x
    x = 426,670,870,997.51/657,201.85
  6. Step 6: Final answer
    x = 649,223.48

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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.