Home / 782,611,212.80-1,174,381,305.60-297,986,009.60

Finding the Fourth Proportional to 782,611,212.80, 1,174,381,305.60 and 297,986,009.60

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Solution

The fourth proportional to 782,611,212.80, 1,174,381,305.60 and 297,986,009.60 is: 447,155,871.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,611,212.80 : 1,174,381,305.60 = 297,986,009.60 : x
  2. Step 2: Convert to fraction form
    782,611,212.80/1,174,381,305.60 = 297,986,009.60/x
  3. Step 3: Cross multiply
    782,611,212.80x = 1,174,381,305.60 × 297,986,009.60
  4. Step 4: Simplify right side
    782,611,212.80x = 349,949,199,004,582,144
  5. Step 5: Solve for x
    x = 349,949,199,004,582,144/782,611,212.80
  6. Step 6: Final answer
    x = 447,155,871.63

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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.