Home / 721,515,611.80-1,082,273,417.70-618,203,481.40

Finding the Fourth Proportional to 721,515,611.80, 1,082,273,417.70 and 618,203,481.40

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Solution

The fourth proportional to 721,515,611.80, 1,082,273,417.70 and 618,203,481.40 is: 927,305,222.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,515,611.80 : 1,082,273,417.70 = 618,203,481.40 : x
  2. Step 2: Convert to fraction form
    721,515,611.80/1,082,273,417.70 = 618,203,481.40/x
  3. Step 3: Cross multiply
    721,515,611.80x = 1,082,273,417.70 × 618,203,481.40
  4. Step 4: Simplify right side
    721,515,611.80x = 669,065,194,648,816,384
  5. Step 5: Solve for x
    x = 669,065,194,648,816,384/721,515,611.80
  6. Step 6: Final answer
    x = 927,305,222.10

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1.5x scale

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.