Home / 687,971.52-1,031,963.04-189,362.88

Finding the Fourth Proportional to 687,971.52, 1,031,963.04 and 189,362.88

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Solution

The fourth proportional to 687,971.52, 1,031,963.04 and 189,362.88 is: 284,045.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,971.52 : 1,031,963.04 = 189,362.88 : x
  2. Step 2: Convert to fraction form
    687,971.52/1,031,963.04 = 189,362.88/x
  3. Step 3: Cross multiply
    687,971.52x = 1,031,963.04 × 189,362.88
  4. Step 4: Simplify right side
    687,971.52x = 195,415,493,307.96
  5. Step 5: Solve for x
    x = 195,415,493,307.96/687,971.52
  6. Step 6: Final answer
    x = 284,045.91

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Why These Related Problems?

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