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Finding the Fourth Proportional to 1,985,994.90, 2,978,992.35 and 656,298.90

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Solution

The fourth proportional to 1,985,994.90, 2,978,992.35 and 656,298.90 is: 984,448.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985,994.90 : 2,978,992.35 = 656,298.90 : x
  2. Step 2: Convert to fraction form
    1,985,994.90/2,978,992.35 = 656,298.90/x
  3. Step 3: Cross multiply
    1,985,994.90x = 2,978,992.35 × 656,298.90
  4. Step 4: Simplify right side
    1,985,994.90x = 1,955,109,402,413.42
  5. Step 5: Solve for x
    x = 1,955,109,402,413.42/1,985,994.90
  6. Step 6: Final answer
    x = 984,448.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.