Home / 920,458,506.11-1,269,856,698.16-679,631,643.64

Finding the Fourth Proportional to 920,458,506.11, 1,269,856,698.16 and 679,631,643.64

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Solution

The fourth proportional to 920,458,506.11, 1,269,856,698.16 and 679,631,643.64 is: 937,614,014.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,458,506.11 : 1,269,856,698.16 = 679,631,643.64 : x
  2. Step 2: Convert to fraction form
    920,458,506.11/1,269,856,698.16 = 679,631,643.64/x
  3. Step 3: Cross multiply
    920,458,506.11x = 1,269,856,698.16 × 679,631,643.64
  4. Step 4: Simplify right side
    920,458,506.11x = 863,034,794,964,395,008
  5. Step 5: Solve for x
    x = 863,034,794,964,395,008/920,458,506.11
  6. Step 6: Final answer
    x = 937,614,014.36

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Double scale
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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.