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Finding the Fourth Proportional to 887,124,652.20, 1,330,686,978.30 and 657,542,140.20

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Solution

The fourth proportional to 887,124,652.20, 1,330,686,978.30 and 657,542,140.20 is: 986,313,210.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,124,652.20 : 1,330,686,978.30 = 657,542,140.20 : x
  2. Step 2: Convert to fraction form
    887,124,652.20/1,330,686,978.30 = 657,542,140.20/x
  3. Step 3: Cross multiply
    887,124,652.20x = 1,330,686,978.30 × 657,542,140.20
  4. Step 4: Simplify right side
    887,124,652.20x = 874,982,763,647,652,992
  5. Step 5: Solve for x
    x = 874,982,763,647,652,992/887,124,652.20
  6. Step 6: Final answer
    x = 986,313,210.30

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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.