Home / 989,424.90-1,366,258.56-622,513.80

Finding the Fourth Proportional to 989,424.90, 1,366,258.56 and 622,513.80

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Solution

The fourth proportional to 989,424.90, 1,366,258.56 and 622,513.80 is: 859,605.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,424.90 : 1,366,258.56 = 622,513.80 : x
  2. Step 2: Convert to fraction form
    989,424.90/1,366,258.56 = 622,513.80/x
  3. Step 3: Cross multiply
    989,424.90x = 1,366,258.56 × 622,513.80
  4. Step 4: Simplify right side
    989,424.90x = 850,514,807,968.13
  5. Step 5: Solve for x
    x = 850,514,807,968.13/989,424.90
  6. Step 6: Final answer
    x = 859,605.22

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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.