Home / 777,947,614.87-1,073,570,943.03-420,715,391.51

Finding the Fourth Proportional to 777,947,614.87, 1,073,570,943.03 and 420,715,391.51

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Solution

The fourth proportional to 777,947,614.87, 1,073,570,943.03 and 420,715,391.51 is: 580,588,989.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,947,614.87 : 1,073,570,943.03 = 420,715,391.51 : x
  2. Step 2: Convert to fraction form
    777,947,614.87/1,073,570,943.03 = 420,715,391.51/x
  3. Step 3: Cross multiply
    777,947,614.87x = 1,073,570,943.03 × 420,715,391.51
  4. Step 4: Simplify right side
    777,947,614.87x = 451,667,819,610,626,304
  5. Step 5: Solve for x
    x = 451,667,819,610,626,304/777,947,614.87
  6. Step 6: Final answer
    x = 580,588,989.51

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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.