Home / 750,143,989.83-1,035,198,705.98-420,119,128.83

Finding the Fourth Proportional to 750,143,989.83, 1,035,198,705.98 and 420,119,128.83

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Solution

The fourth proportional to 750,143,989.83, 1,035,198,705.98 and 420,119,128.83 is: 579,764,397.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,143,989.83 : 1,035,198,705.98 = 420,119,128.83 : x
  2. Step 2: Convert to fraction form
    750,143,989.83/1,035,198,705.98 = 420,119,128.83/x
  3. Step 3: Cross multiply
    750,143,989.83x = 1,035,198,705.98 × 420,119,128.83
  4. Step 4: Simplify right side
    750,143,989.83x = 434,906,778,520,160,320
  5. Step 5: Solve for x
    x = 434,906,778,520,160,320/750,143,989.83
  6. Step 6: Final answer
    x = 579,764,397.79

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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.