Home / 815,965.80-1,223,948.70-648,004.20

Finding the Fourth Proportional to 815,965.80, 1,223,948.70 and 648,004.20

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Solution

The fourth proportional to 815,965.80, 1,223,948.70 and 648,004.20 is: 972,006.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,965.80 : 1,223,948.70 = 648,004.20 : x
  2. Step 2: Convert to fraction form
    815,965.80/1,223,948.70 = 648,004.20/x
  3. Step 3: Cross multiply
    815,965.80x = 1,223,948.70 × 648,004.20
  4. Step 4: Simplify right side
    815,965.80x = 793,123,898,184.54
  5. Step 5: Solve for x
    x = 793,123,898,184.54/815,965.80
  6. Step 6: Final answer
    x = 972,006.30

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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.