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Finding the Fourth Proportional to 915,566,908.20, 1,266,809,442.84 and 798,336,709.80

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Solution

The fourth proportional to 915,566,908.20, 1,266,809,442.84 and 798,336,709.80 is: 1,104,605,762.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,566,908.20 : 1,266,809,442.84 = 798,336,709.80 : x
  2. Step 2: Convert to fraction form
    915,566,908.20/1,266,809,442.84 = 798,336,709.80/x
  3. Step 3: Cross multiply
    915,566,908.20x = 1,266,809,442.84 × 798,336,709.80
  4. Step 4: Simplify right side
    915,566,908.20x = 1,011,340,482,540,456,576
  5. Step 5: Solve for x
    x = 1,011,340,482,540,456,576/915,566,908.20
  6. Step 6: Final answer
    x = 1,104,605,762.27

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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.