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Finding the Fourth Proportional to 708,291.28, 977,413.44 and 385,994.45

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Solution

The fourth proportional to 708,291.28, 977,413.44 and 385,994.45 is: 532,656.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,291.28 : 977,413.44 = 385,994.45 : x
  2. Step 2: Convert to fraction form
    708,291.28/977,413.44 = 385,994.45/x
  3. Step 3: Cross multiply
    708,291.28x = 977,413.44 × 385,994.45
  4. Step 4: Simplify right side
    708,291.28x = 377,276,163,195.41
  5. Step 5: Solve for x
    x = 377,276,163,195.41/708,291.28
  6. Step 6: Final answer
    x = 532,656.80

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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.