Home / 1,322,849,900.40-1,825,518,375.72-728,121,669.36

Finding the Fourth Proportional to 1,322,849,900.40, 1,825,518,375.72 and 728,121,669.36

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Solution

The fourth proportional to 1,322,849,900.40, 1,825,518,375.72 and 728,121,669.36 is: 1,004,799,929.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322,849,900.40 : 1,825,518,375.72 = 728,121,669.36 : x
  2. Step 2: Convert to fraction form
    1,322,849,900.40/1,825,518,375.72 = 728,121,669.36/x
  3. Step 3: Cross multiply
    1,322,849,900.40x = 1,825,518,375.72 × 728,121,669.36
  4. Step 4: Simplify right side
    1,322,849,900.40x = 1,329,199,487,176,602,112
  5. Step 5: Solve for x
    x = 1,329,199,487,176,602,112/1,322,849,900.40
  6. Step 6: Final answer
    x = 1,004,799,929.89

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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.