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Finding the Fourth Proportional to 1,322,849,889.40, 1,825,518,360.54 and 728,121,658.36

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Solution

The fourth proportional to 1,322,849,889.40, 1,825,518,360.54 and 728,121,658.36 is: 1,004,799,914.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322,849,889.40 : 1,825,518,360.54 = 728,121,658.36 : x
  2. Step 2: Convert to fraction form
    1,322,849,889.40/1,825,518,360.54 = 728,121,658.36/x
  3. Step 3: Cross multiply
    1,322,849,889.40x = 1,825,518,360.54 × 728,121,658.36
  4. Step 4: Simplify right side
    1,322,849,889.40x = 1,329,199,456,043,013,120
  5. Step 5: Solve for x
    x = 1,329,199,456,043,013,120/1,322,849,889.40
  6. Step 6: Final answer
    x = 1,004,799,914.71

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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.