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Finding the Fourth Proportional to 518,413.25, 777,619.88 and 124,429.25

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Solution

The fourth proportional to 518,413.25, 777,619.88 and 124,429.25 is: 186,643.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,413.25 : 777,619.88 = 124,429.25 : x
  2. Step 2: Convert to fraction form
    518,413.25/777,619.88 = 124,429.25/x
  3. Step 3: Cross multiply
    518,413.25x = 777,619.88 × 124,429.25
  4. Step 4: Simplify right side
    518,413.25x = 96,758,657,831.34
  5. Step 5: Solve for x
    x = 96,758,657,831.34/518,413.25
  6. Step 6: Final answer
    x = 186,643.88

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Similar ratio
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1.5x scale

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.