Home / 426,278.16-639,537.21-186,413.13

Finding the Fourth Proportional to 426,278.16, 639,537.21 and 186,413.13

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Solution

The fourth proportional to 426,278.16, 639,537.21 and 186,413.13 is: 279,672.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,278.16 : 639,537.21 = 186,413.13 : x
  2. Step 2: Convert to fraction form
    426,278.16/639,537.21 = 186,413.13/x
  3. Step 3: Cross multiply
    426,278.16x = 639,537.21 × 186,413.13
  4. Step 4: Simplify right side
    426,278.16x = 119,218,133,067.57
  5. Step 5: Solve for x
    x = 119,218,133,067.57/426,278.16
  6. Step 6: Final answer
    x = 279,672.16

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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.