Home / 859,413.30-1,288,269.45-379,901.40

Finding the Fourth Proportional to 859,413.30, 1,288,269.45 and 379,901.40

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Solution

The fourth proportional to 859,413.30, 1,288,269.45 and 379,901.40 is: 569,476.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,413.30 : 1,288,269.45 = 379,901.40 : x
  2. Step 2: Convert to fraction form
    859,413.30/1,288,269.45 = 379,901.40/x
  3. Step 3: Cross multiply
    859,413.30x = 1,288,269.45 × 379,901.40
  4. Step 4: Simplify right side
    859,413.30x = 489,415,367,632.23
  5. Step 5: Solve for x
    x = 489,415,367,632.23/859,413.30
  6. Step 6: Final answer
    x = 569,476.14

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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.