Home / 678,498.06-936,343.60-368,413.72

Finding the Fourth Proportional to 678,498.06, 936,343.60 and 368,413.72

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Solution

The fourth proportional to 678,498.06, 936,343.60 and 368,413.72 is: 508,419.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,498.06 : 936,343.60 = 368,413.72 : x
  2. Step 2: Convert to fraction form
    678,498.06/936,343.60 = 368,413.72/x
  3. Step 3: Cross multiply
    678,498.06x = 936,343.60 × 368,413.72
  4. Step 4: Simplify right side
    678,498.06x = 344,961,825,612.30
  5. Step 5: Solve for x
    x = 344,961,825,612.30/678,498.06
  6. Step 6: Final answer
    x = 508,419.76

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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.