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Finding the Fourth Proportional to 717,692,822.01, 990,415,941.71 and 387,667,964.25

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Solution

The fourth proportional to 717,692,822.01, 990,415,941.71 and 387,667,964.25 is: 534,981,708.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,692,822.01 : 990,415,941.71 = 387,667,964.25 : x
  2. Step 2: Convert to fraction form
    717,692,822.01/990,415,941.71 = 387,667,964.25/x
  3. Step 3: Cross multiply
    717,692,822.01x = 990,415,941.71 × 387,667,964.25
  4. Step 4: Simplify right side
    717,692,822.01x = 383,952,531,881,524,032
  5. Step 5: Solve for x
    x = 383,952,531,881,524,032/717,692,822.01
  6. Step 6: Final answer
    x = 534,981,708.20

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1.5x scale

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.