Home / 678,500.10-936,346.41-368,415.77

Finding the Fourth Proportional to 678,500.10, 936,346.41 and 368,415.77

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Solution

The fourth proportional to 678,500.10, 936,346.41 and 368,415.77 is: 508,422.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,500.10 : 936,346.41 = 368,415.77 : x
  2. Step 2: Convert to fraction form
    678,500.10/936,346.41 = 368,415.77/x
  3. Step 3: Cross multiply
    678,500.10x = 936,346.41 × 368,415.77
  4. Step 4: Simplify right side
    678,500.10x = 344,964,778,945.15
  5. Step 5: Solve for x
    x = 344,964,778,945.15/678,500.10
  6. Step 6: Final answer
    x = 508,422.59

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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.