Home / 919,399,143.18-1,268,797,612.14-501,738,330.72

Finding the Fourth Proportional to 919,399,143.18, 1,268,797,612.14 and 501,738,330.72

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Solution

The fourth proportional to 919,399,143.18, 1,268,797,612.14 and 501,738,330.72 is: 692,413,518.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,399,143.18 : 1,268,797,612.14 = 501,738,330.72 : x
  2. Step 2: Convert to fraction form
    919,399,143.18/1,268,797,612.14 = 501,738,330.72/x
  3. Step 3: Cross multiply
    919,399,143.18x = 1,268,797,612.14 × 501,738,330.72
  4. Step 4: Simplify right side
    919,399,143.18x = 636,604,395,936,645,632
  5. Step 5: Solve for x
    x = 636,604,395,936,645,632/919,399,143.18
  6. Step 6: Final answer
    x = 692,413,518.83

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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.