Home / 1,204,897.80-1,662,866.51-661,139.47

Finding the Fourth Proportional to 1,204,897.80, 1,662,866.51 and 661,139.47

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Solution

The fourth proportional to 1,204,897.80, 1,662,866.51 and 661,139.47 is: 912,431.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204,897.80 : 1,662,866.51 = 661,139.47 : x
  2. Step 2: Convert to fraction form
    1,204,897.80/1,662,866.51 = 661,139.47/x
  3. Step 3: Cross multiply
    1,204,897.80x = 1,662,866.51 × 661,139.47
  4. Step 4: Simplify right side
    1,204,897.80x = 1,099,386,683,102.15
  5. Step 5: Solve for x
    x = 1,099,386,683,102.15/1,204,897.80
  6. Step 6: Final answer
    x = 912,431.48

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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.