Home / 750,143,986.20-1,035,198,700.94-420,119,125.20

Finding the Fourth Proportional to 750,143,986.20, 1,035,198,700.94 and 420,119,125.20

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Solution

The fourth proportional to 750,143,986.20, 1,035,198,700.94 and 420,119,125.20 is: 579,764,392.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,143,986.20 : 1,035,198,700.94 = 420,119,125.20 : x
  2. Step 2: Convert to fraction form
    750,143,986.20/1,035,198,700.94 = 420,119,125.20/x
  3. Step 3: Cross multiply
    750,143,986.20x = 1,035,198,700.94 × 420,119,125.20
  4. Step 4: Simplify right side
    750,143,986.20x = 434,906,772,648,139,520
  5. Step 5: Solve for x
    x = 434,906,772,648,139,520/750,143,986.20
  6. Step 6: Final answer
    x = 579,764,392.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.