Home / 912,424.20-1,369,413.90-407,761.80

Finding the Fourth Proportional to 912,424.20, 1,369,413.90 and 407,761.80

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Solution

The fourth proportional to 912,424.20, 1,369,413.90 and 407,761.80 is: 611,990.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,424.20 : 1,369,413.90 = 407,761.80 : x
  2. Step 2: Convert to fraction form
    912,424.20/1,369,413.90 = 407,761.80/x
  3. Step 3: Cross multiply
    912,424.20x = 1,369,413.90 × 407,761.80
  4. Step 4: Simplify right side
    912,424.20x = 558,394,676,809.02
  5. Step 5: Solve for x
    x = 558,394,676,809.02/912,424.20
  6. Step 6: Final answer
    x = 611,990.21

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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.