Home / 1,221,847,448.91-1,686,205,003.65-720,077,409.87

Finding the Fourth Proportional to 1,221,847,448.91, 1,686,205,003.65 and 720,077,409.87

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Solution

The fourth proportional to 1,221,847,448.91, 1,686,205,003.65 and 720,077,409.87 is: 993,739,547.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,847,448.91 : 1,686,205,003.65 = 720,077,409.87 : x
  2. Step 2: Convert to fraction form
    1,221,847,448.91/1,686,205,003.65 = 720,077,409.87/x
  3. Step 3: Cross multiply
    1,221,847,448.91x = 1,686,205,003.65 × 720,077,409.87
  4. Step 4: Simplify right side
    1,221,847,448.91x = 1,214,198,131,538,126,080
  5. Step 5: Solve for x
    x = 1,214,198,131,538,126,080/1,221,847,448.91
  6. Step 6: Final answer
    x = 993,739,547.95

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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.