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Finding the Fourth Proportional to 720,747.36, 993,403.19 and 659,661.48

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Solution

The fourth proportional to 720,747.36, 993,403.19 and 659,661.48 is: 909,208.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,747.36 : 993,403.19 = 659,661.48 : x
  2. Step 2: Convert to fraction form
    720,747.36/993,403.19 = 659,661.48/x
  3. Step 3: Cross multiply
    720,747.36x = 993,403.19 × 659,661.48
  4. Step 4: Simplify right side
    720,747.36x = 655,309,815,253.81
  5. Step 5: Solve for x
    x = 655,309,815,253.81/720,747.36
  6. Step 6: Final answer
    x = 909,208.76

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1.5x scale

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.