Home / 643,417.20-964,811.34-264,236.58

Finding the Fourth Proportional to 643,417.20, 964,811.34 and 264,236.58

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Solution

The fourth proportional to 643,417.20, 964,811.34 and 264,236.58 is: 396,225.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,417.20 : 964,811.34 = 264,236.58 : x
  2. Step 2: Convert to fraction form
    643,417.20/964,811.34 = 264,236.58/x
  3. Step 3: Cross multiply
    643,417.20x = 964,811.34 × 264,236.58
  4. Step 4: Simplify right side
    643,417.20x = 254,938,448,826.82
  5. Step 5: Solve for x
    x = 254,938,448,826.82/643,417.20
  6. Step 6: Final answer
    x = 396,225.73

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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.