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Finding the Fourth Proportional to 629,345.68, 868,498.13 and 357,413.51

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Solution

The fourth proportional to 629,345.68, 868,498.13 and 357,413.51 is: 493,231.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,345.68 : 868,498.13 = 357,413.51 : x
  2. Step 2: Convert to fraction form
    629,345.68/868,498.13 = 357,413.51/x
  3. Step 3: Cross multiply
    629,345.68x = 868,498.13 × 357,413.51
  4. Step 4: Simplify right side
    629,345.68x = 310,412,968,136.52
  5. Step 5: Solve for x
    x = 310,412,968,136.52/629,345.68
  6. Step 6: Final answer
    x = 493,231.27

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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.