Home / 1,988,171,190.64-2,982,687,275.10-761,339,685.88

Finding the Fourth Proportional to 1,988,171,190.64, 2,982,687,275.10 and 761,339,685.88

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Solution

The fourth proportional to 1,988,171,190.64, 2,982,687,275.10 and 761,339,685.88 is: 1,142,174,378.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988,171,190.64 : 2,982,687,275.10 = 761,339,685.88 : x
  2. Step 2: Convert to fraction form
    1,988,171,190.64/2,982,687,275.10 = 761,339,685.88/x
  3. Step 3: Cross multiply
    1,988,171,190.64x = 2,982,687,275.10 × 761,339,685.88
  4. Step 4: Simplify right side
    1,988,171,190.64x = 2,270,838,193,102,907,136
  5. Step 5: Solve for x
    x = 2,270,838,193,102,907,136/1,988,171,190.64
  6. Step 6: Final answer
    x = 1,142,174,378.04

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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.