Home / 691,021.43-953,642.04-404,633.78

Finding the Fourth Proportional to 691,021.43, 953,642.04 and 404,633.78

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Solution

The fourth proportional to 691,021.43, 953,642.04 and 404,633.78 is: 558,413.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,021.43 : 953,642.04 = 404,633.78 : x
  2. Step 2: Convert to fraction form
    691,021.43/953,642.04 = 404,633.78/x
  3. Step 3: Cross multiply
    691,021.43x = 953,642.04 × 404,633.78
  4. Step 4: Simplify right side
    691,021.43x = 385,875,778,643.90
  5. Step 5: Solve for x
    x = 385,875,778,643.90/691,021.43
  6. Step 6: Final answer
    x = 558,413.62

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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.