Home / 1,225,364.88-1,690,753.56-715,968.72

Finding the Fourth Proportional to 1,225,364.88, 1,690,753.56 and 715,968.72

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Solution

The fourth proportional to 1,225,364.88, 1,690,753.56 and 715,968.72 is: 987,890.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,364.88 : 1,690,753.56 = 715,968.72 : x
  2. Step 2: Convert to fraction form
    1,225,364.88/1,690,753.56 = 715,968.72/x
  3. Step 3: Cross multiply
    1,225,364.88x = 1,690,753.56 × 715,968.72
  4. Step 4: Simplify right side
    1,225,364.88x = 1,210,526,662,188.64
  5. Step 5: Solve for x
    x = 1,210,526,662,188.64/1,225,364.88
  6. Step 6: Final answer
    x = 987,890.78

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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.