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Finding the Fourth Proportional to 1,294,088,800.20, 1,941,133,200.30 and 987,978,784.20

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Solution

The fourth proportional to 1,294,088,800.20, 1,941,133,200.30 and 987,978,784.20 is: 1,481,968,176.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,088,800.20 : 1,941,133,200.30 = 987,978,784.20 : x
  2. Step 2: Convert to fraction form
    1,294,088,800.20/1,941,133,200.30 = 987,978,784.20/x
  3. Step 3: Cross multiply
    1,294,088,800.20x = 1,941,133,200.30 × 987,978,784.20
  4. Step 4: Simplify right side
    1,294,088,800.20x = 1,917,798,419,202,649,088
  5. Step 5: Solve for x
    x = 1,917,798,419,202,649,088/1,294,088,800.20
  6. Step 6: Final answer
    x = 1,481,968,176.30

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1.5x scale

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.