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Finding the Fourth Proportional to 554,413.30, 831,291.90 and 288,692.80

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Solution

The fourth proportional to 554,413.30, 831,291.90 and 288,692.80 is: 432,868.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,413.30 : 831,291.90 = 288,692.80 : x
  2. Step 2: Convert to fraction form
    554,413.30/831,291.90 = 288,692.80/x
  3. Step 3: Cross multiply
    554,413.30x = 831,291.90 × 288,692.80
  4. Step 4: Simplify right side
    554,413.30x = 239,987,986,228.32
  5. Step 5: Solve for x
    x = 239,987,986,228.32/554,413.30
  6. Step 6: Final answer
    x = 432,868.38

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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.