Home / 839,810,020.20-1,259,715,030.30-768,384,349.80

Finding the Fourth Proportional to 839,810,020.20, 1,259,715,030.30 and 768,384,349.80

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Solution

The fourth proportional to 839,810,020.20, 1,259,715,030.30 and 768,384,349.80 is: 1,152,576,524.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,810,020.20 : 1,259,715,030.30 = 768,384,349.80 : x
  2. Step 2: Convert to fraction form
    839,810,020.20/1,259,715,030.30 = 768,384,349.80/x
  3. Step 3: Cross multiply
    839,810,020.20x = 1,259,715,030.30 × 768,384,349.80
  4. Step 4: Simplify right side
    839,810,020.20x = 967,945,314,490,352,640
  5. Step 5: Solve for x
    x = 967,945,314,490,352,640/839,810,020.20
  6. Step 6: Final answer
    x = 1,152,576,524.70

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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.