Home / 1,128,035.68-1,688,729.28-988,067.68

Finding the Fourth Proportional to 1,128,035.68, 1,688,729.28 and 988,067.68

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Solution

The fourth proportional to 1,128,035.68, 1,688,729.28 and 988,067.68 is: 1,479,189.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,035.68 : 1,688,729.28 = 988,067.68 : x
  2. Step 2: Convert to fraction form
    1,128,035.68/1,688,729.28 = 988,067.68/x
  3. Step 3: Cross multiply
    1,128,035.68x = 1,688,729.28 × 988,067.68
  4. Step 4: Simplify right side
    1,128,035.68x = 1,668,578,821,837.67
  5. Step 5: Solve for x
    x = 1,668,578,821,837.67/1,128,035.68
  6. Step 6: Final answer
    x = 1,479,189.76

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.