Home / 1,225,178.97-1,690,499.21-715,782.93

Finding the Fourth Proportional to 1,225,178.97, 1,690,499.21 and 715,782.93

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Solution

The fourth proportional to 1,225,178.97, 1,690,499.21 and 715,782.93 is: 987,635.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,178.97 : 1,690,499.21 = 715,782.93 : x
  2. Step 2: Convert to fraction form
    1,225,178.97/1,690,499.21 = 715,782.93/x
  3. Step 3: Cross multiply
    1,225,178.97x = 1,690,499.21 × 715,782.93
  4. Step 4: Simplify right side
    1,225,178.97x = 1,210,030,471,804.48
  5. Step 5: Solve for x
    x = 1,210,030,471,804.48/1,225,178.97
  6. Step 6: Final answer
    x = 987,635.69

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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.