Home / 1,174,206.78-1,620,405.59-715,321.32

Finding the Fourth Proportional to 1,174,206.78, 1,620,405.59 and 715,321.32

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Solution

The fourth proportional to 1,174,206.78, 1,620,405.59 and 715,321.32 is: 987,143.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174,206.78 : 1,620,405.59 = 715,321.32 : x
  2. Step 2: Convert to fraction form
    1,174,206.78/1,620,405.59 = 715,321.32/x
  3. Step 3: Cross multiply
    1,174,206.78x = 1,620,405.59 × 715,321.32
  4. Step 4: Simplify right side
    1,174,206.78x = 1,159,110,665,574.18
  5. Step 5: Solve for x
    x = 1,159,110,665,574.18/1,174,206.78
  6. Step 6: Final answer
    x = 987,143.56

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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.