Home / 1,285,279,644.32-1,773,723,322.64-728,344,172.96

Finding the Fourth Proportional to 1,285,279,644.32, 1,773,723,322.64 and 728,344,172.96

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Solution

The fourth proportional to 1,285,279,644.32, 1,773,723,322.64 and 728,344,172.96 is: 1,005,136,160.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,279,644.32 : 1,773,723,322.64 = 728,344,172.96 : x
  2. Step 2: Convert to fraction form
    1,285,279,644.32/1,773,723,322.64 = 728,344,172.96/x
  3. Step 3: Cross multiply
    1,285,279,644.32x = 1,773,723,322.64 × 728,344,172.96
  4. Step 4: Simplify right side
    1,285,279,644.32x = 1,291,881,046,488,094,208
  5. Step 5: Solve for x
    x = 1,291,881,046,488,094,208/1,285,279,644.32
  6. Step 6: Final answer
    x = 1,005,136,160.21

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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.