Home / 990,160,213.80-1,485,240,320.70-878,238,739.20

Finding the Fourth Proportional to 990,160,213.80, 1,485,240,320.70 and 878,238,739.20

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Solution

The fourth proportional to 990,160,213.80, 1,485,240,320.70 and 878,238,739.20 is: 1,317,358,108.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,160,213.80 : 1,485,240,320.70 = 878,238,739.20 : x
  2. Step 2: Convert to fraction form
    990,160,213.80/1,485,240,320.70 = 878,238,739.20/x
  3. Step 3: Cross multiply
    990,160,213.80x = 1,485,240,320.70 × 878,238,739.20
  4. Step 4: Simplify right side
    990,160,213.80x = 1,304,395,586,660,571,648
  5. Step 5: Solve for x
    x = 1,304,395,586,660,571,648/990,160,213.80
  6. Step 6: Final answer
    x = 1,317,358,108.80

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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.