Home / 668,729.14-922,828.08-406,986.10

Finding the Fourth Proportional to 668,729.14, 922,828.08 and 406,986.10

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Solution

The fourth proportional to 668,729.14, 922,828.08 and 406,986.10 is: 561,629.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,729.14 : 922,828.08 = 406,986.10 : x
  2. Step 2: Convert to fraction form
    668,729.14/922,828.08 = 406,986.10/x
  3. Step 3: Cross multiply
    668,729.14x = 922,828.08 × 406,986.10
  4. Step 4: Simplify right side
    668,729.14x = 375,578,201,249.69
  5. Step 5: Solve for x
    x = 375,578,201,249.69/668,729.14
  6. Step 6: Final answer
    x = 561,629.78

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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.