Home / 721,504,341.80-1,082,256,512.70-618,192,211.40

Finding the Fourth Proportional to 721,504,341.80, 1,082,256,512.70 and 618,192,211.40

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Solution

The fourth proportional to 721,504,341.80, 1,082,256,512.70 and 618,192,211.40 is: 927,288,317.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,504,341.80 : 1,082,256,512.70 = 618,192,211.40 : x
  2. Step 2: Convert to fraction form
    721,504,341.80/1,082,256,512.70 = 618,192,211.40/x
  3. Step 3: Cross multiply
    721,504,341.80x = 1,082,256,512.70 × 618,192,211.40
  4. Step 4: Simplify right side
    721,504,341.80x = 669,042,546,888,065,152
  5. Step 5: Solve for x
    x = 669,042,546,888,065,152/721,504,341.80
  6. Step 6: Final answer
    x = 927,288,317.10

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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.