Home / 685,462.24-1,030,018.20-642,367.45

Finding the Fourth Proportional to 685,462.24, 1,030,018.20 and 642,367.45

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Solution

The fourth proportional to 685,462.24, 1,030,018.20 and 642,367.45 is: 965,261.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,462.24 : 1,030,018.20 = 642,367.45 : x
  2. Step 2: Convert to fraction form
    685,462.24/1,030,018.20 = 642,367.45/x
  3. Step 3: Cross multiply
    685,462.24x = 1,030,018.20 × 642,367.45
  4. Step 4: Simplify right side
    685,462.24x = 661,650,164,587.59
  5. Step 5: Solve for x
    x = 661,650,164,587.59/685,462.24
  6. Step 6: Final answer
    x = 965,261.29

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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.