Home / 1,221,847,683.20-1,686,205,327.56-720,077,644.16

Finding the Fourth Proportional to 1,221,847,683.20, 1,686,205,327.56 and 720,077,644.16

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Solution

The fourth proportional to 1,221,847,683.20, 1,686,205,327.56 and 720,077,644.16 is: 993,739,871.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,847,683.20 : 1,686,205,327.56 = 720,077,644.16 : x
  2. Step 2: Convert to fraction form
    1,221,847,683.20/1,686,205,327.56 = 720,077,644.16/x
  3. Step 3: Cross multiply
    1,221,847,683.20x = 1,686,205,327.56 × 720,077,644.16
  4. Step 4: Simplify right side
    1,221,847,683.20x = 1,214,198,759,839,445,760
  5. Step 5: Solve for x
    x = 1,214,198,759,839,445,760/1,221,847,683.20
  6. Step 6: Final answer
    x = 993,739,871.62

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1.5x scale

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.