Home / 917,413.80-1,376,120.70-664,159.20

Finding the Fourth Proportional to 917,413.80, 1,376,120.70 and 664,159.20

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Solution

The fourth proportional to 917,413.80, 1,376,120.70 and 664,159.20 is: 996,238.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,413.80 : 1,376,120.70 = 664,159.20 : x
  2. Step 2: Convert to fraction form
    917,413.80/1,376,120.70 = 664,159.20/x
  3. Step 3: Cross multiply
    917,413.80x = 1,376,120.70 × 664,159.20
  4. Step 4: Simplify right side
    917,413.80x = 913,963,223,215.44
  5. Step 5: Solve for x
    x = 913,963,223,215.44/917,413.80
  6. Step 6: Final answer
    x = 996,238.80

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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.