Home / 815,739.57-1,223,784.45-342,152.01

Finding the Fourth Proportional to 815,739.57, 1,223,784.45 and 342,152.01

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Solution

The fourth proportional to 815,739.57, 1,223,784.45 and 342,152.01 is: 513,301.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,739.57 : 1,223,784.45 = 342,152.01 : x
  2. Step 2: Convert to fraction form
    815,739.57/1,223,784.45 = 342,152.01/x
  3. Step 3: Cross multiply
    815,739.57x = 1,223,784.45 × 342,152.01
  4. Step 4: Simplify right side
    815,739.57x = 418,720,309,374.25
  5. Step 5: Solve for x
    x = 418,720,309,374.25/815,739.57
  6. Step 6: Final answer
    x = 513,301.46

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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.