Home / 1,296,221.40-1,942,776.90-664,810.20

Finding the Fourth Proportional to 1,296,221.40, 1,942,776.90 and 664,810.20

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Solution

The fourth proportional to 1,296,221.40, 1,942,776.90 and 664,810.20 is: 996,417.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,221.40 : 1,942,776.90 = 664,810.20 : x
  2. Step 2: Convert to fraction form
    1,296,221.40/1,942,776.90 = 664,810.20/x
  3. Step 3: Cross multiply
    1,296,221.40x = 1,942,776.90 × 664,810.20
  4. Step 4: Simplify right side
    1,296,221.40x = 1,291,577,899,444.38
  5. Step 5: Solve for x
    x = 1,291,577,899,444.38/1,296,221.40
  6. Step 6: Final answer
    x = 996,417.66

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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.