Home / 677,465.37-934,834.83-391,077.72

Finding the Fourth Proportional to 677,465.37, 934,834.83 and 391,077.72

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Solution

The fourth proportional to 677,465.37, 934,834.83 and 391,077.72 is: 539,648.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,465.37 : 934,834.83 = 391,077.72 : x
  2. Step 2: Convert to fraction form
    677,465.37/934,834.83 = 391,077.72/x
  3. Step 3: Cross multiply
    677,465.37x = 934,834.83 × 391,077.72
  4. Step 4: Simplify right side
    677,465.37x = 365,593,073,892.99
  5. Step 5: Solve for x
    x = 365,593,073,892.99/677,465.37
  6. Step 6: Final answer
    x = 539,648.36

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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.