Home / 440,124,919.20-660,187,378.80-210,542,407.20

Finding the Fourth Proportional to 440,124,919.20, 660,187,378.80 and 210,542,407.20

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Solution

The fourth proportional to 440,124,919.20, 660,187,378.80 and 210,542,407.20 is: 315,813,610.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,124,919.20 : 660,187,378.80 = 210,542,407.20 : x
  2. Step 2: Convert to fraction form
    440,124,919.20/660,187,378.80 = 210,542,407.20/x
  3. Step 3: Cross multiply
    440,124,919.20x = 660,187,378.80 × 210,542,407.20
  4. Step 4: Simplify right side
    440,124,919.20x = 138,997,439,935,610,224
  5. Step 5: Solve for x
    x = 138,997,439,935,610,224/440,124,919.20
  6. Step 6: Final answer
    x = 315,813,610.80

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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.