Home / 816,958,254.36-1,219,065,478.56-728,914,620.72

Finding the Fourth Proportional to 816,958,254.36, 1,219,065,478.56 and 728,914,620.72

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Solution

The fourth proportional to 816,958,254.36, 1,219,065,478.56 and 728,914,620.72 is: 1,087,686,728.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,958,254.36 : 1,219,065,478.56 = 728,914,620.72 : x
  2. Step 2: Convert to fraction form
    816,958,254.36/1,219,065,478.56 = 728,914,620.72/x
  3. Step 3: Cross multiply
    816,958,254.36x = 1,219,065,478.56 × 728,914,620.72
  4. Step 4: Simplify right side
    816,958,254.36x = 888,594,650,937,407,744
  5. Step 5: Solve for x
    x = 888,594,650,937,407,744/816,958,254.36
  6. Step 6: Final answer
    x = 1,087,686,728.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.