Home / 548,413.20-822,619.80-478,429.20

Finding the Fourth Proportional to 548,413.20, 822,619.80 and 478,429.20

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Solution

The fourth proportional to 548,413.20, 822,619.80 and 478,429.20 is: 717,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,413.20 : 822,619.80 = 478,429.20 : x
  2. Step 2: Convert to fraction form
    548,413.20/822,619.80 = 478,429.20/x
  3. Step 3: Cross multiply
    548,413.20x = 822,619.80 × 478,429.20
  4. Step 4: Simplify right side
    548,413.20x = 393,565,332,818.16
  5. Step 5: Solve for x
    x = 393,565,332,818.16/548,413.20
  6. Step 6: Final answer
    x = 717,643.80

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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.