Home / 709,828.75-979,413.97-451,612.45

Finding the Fourth Proportional to 709,828.75, 979,413.97 and 451,612.45

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Solution

The fourth proportional to 709,828.75, 979,413.97 and 451,612.45 is: 623,129.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,828.75 : 979,413.97 = 451,612.45 : x
  2. Step 2: Convert to fraction form
    709,828.75/979,413.97 = 451,612.45/x
  3. Step 3: Cross multiply
    709,828.75x = 979,413.97 × 451,612.45
  4. Step 4: Simplify right side
    709,828.75x = 442,315,535,400.79
  5. Step 5: Solve for x
    x = 442,315,535,400.79/709,828.75
  6. Step 6: Final answer
    x = 623,129.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.