Home / 687,297.12-1,031,347.44-287,904

Finding the Fourth Proportional to 687,297.12, 1,031,347.44 and 287,904

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Solution

The fourth proportional to 687,297.12, 1,031,347.44 and 287,904 is: 432,024.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,297.12 : 1,031,347.44 = 287,904 : x
  2. Step 2: Convert to fraction form
    687,297.12/1,031,347.44 = 287,904/x
  3. Step 3: Cross multiply
    687,297.12x = 1,031,347.44 × 287,904
  4. Step 4: Simplify right side
    687,297.12x = 296,929,053,365.76
  5. Step 5: Solve for x
    x = 296,929,053,365.76/687,297.12
  6. Step 6: Final answer
    x = 432,024.29

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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.