Home / 679,231.51-936,949.16-424,139.83

Finding the Fourth Proportional to 679,231.51, 936,949.16 and 424,139.83

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Solution

The fourth proportional to 679,231.51, 936,949.16 and 424,139.83 is: 585,069.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,231.51 : 936,949.16 = 424,139.83 : x
  2. Step 2: Convert to fraction form
    679,231.51/936,949.16 = 424,139.83/x
  3. Step 3: Cross multiply
    679,231.51x = 936,949.16 × 424,139.83
  4. Step 4: Simplify right side
    679,231.51x = 397,397,456,159.02
  5. Step 5: Solve for x
    x = 397,397,456,159.02/679,231.51
  6. Step 6: Final answer
    x = 585,069.23

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.