Home / 661,187,426.40-991,781,139.60-201,124,857.60

Finding the Fourth Proportional to 661,187,426.40, 991,781,139.60 and 201,124,857.60

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Solution

The fourth proportional to 661,187,426.40, 991,781,139.60 and 201,124,857.60 is: 301,687,286.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,187,426.40 : 991,781,139.60 = 201,124,857.60 : x
  2. Step 2: Convert to fraction form
    661,187,426.40/991,781,139.60 = 201,124,857.60/x
  3. Step 3: Cross multiply
    661,187,426.40x = 991,781,139.60 × 201,124,857.60
  4. Step 4: Simplify right side
    661,187,426.40x = 199,471,840,472,415,712
  5. Step 5: Solve for x
    x = 199,471,840,472,415,712/661,187,426.40
  6. Step 6: Final answer
    x = 301,687,286.40

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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.