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Finding the Fourth Proportional to 554,413.80, 831,292.65 and 288,693.30

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Solution

The fourth proportional to 554,413.80, 831,292.65 and 288,693.30 is: 432,869.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,413.80 : 831,292.65 = 288,693.30 : x
  2. Step 2: Convert to fraction form
    554,413.80/831,292.65 = 288,693.30/x
  3. Step 3: Cross multiply
    554,413.80x = 831,292.65 × 288,693.30
  4. Step 4: Simplify right side
    554,413.80x = 239,988,618,394.25
  5. Step 5: Solve for x
    x = 239,988,618,394.25/554,413.80
  6. Step 6: Final answer
    x = 432,869.13

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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.