Home / 668,811.40-1,003,338.60-219,407.20

Finding the Fourth Proportional to 668,811.40, 1,003,338.60 and 219,407.20

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Solution

The fourth proportional to 668,811.40, 1,003,338.60 and 219,407.20 is: 329,150.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,811.40 : 1,003,338.60 = 219,407.20 : x
  2. Step 2: Convert to fraction form
    668,811.40/1,003,338.60 = 219,407.20/x
  3. Step 3: Cross multiply
    668,811.40x = 1,003,338.60 × 219,407.20
  4. Step 4: Simplify right side
    668,811.40x = 220,139,712,877.92
  5. Step 5: Solve for x
    x = 220,139,712,877.92/668,811.40
  6. Step 6: Final answer
    x = 329,150.66

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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.