Home / 646,246.50-891,840.69-404,451.78

Finding the Fourth Proportional to 646,246.50, 891,840.69 and 404,451.78

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Solution

The fourth proportional to 646,246.50, 891,840.69 and 404,451.78 is: 558,156.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,246.50 : 891,840.69 = 404,451.78 : x
  2. Step 2: Convert to fraction form
    646,246.50/891,840.69 = 404,451.78/x
  3. Step 3: Cross multiply
    646,246.50x = 891,840.69 × 404,451.78
  4. Step 4: Simplify right side
    646,246.50x = 360,706,554,546.93
  5. Step 5: Solve for x
    x = 360,706,554,546.93/646,246.50
  6. Step 6: Final answer
    x = 558,156.30

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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.