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Finding the Fourth Proportional to 720,845.92, 994,743 and 414,879.84

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Solution

The fourth proportional to 720,845.92, 994,743 and 414,879.84 is: 572,520.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,845.92 : 994,743 = 414,879.84 : x
  2. Step 2: Convert to fraction form
    720,845.92/994,743 = 414,879.84/x
  3. Step 3: Cross multiply
    720,845.92x = 994,743 × 414,879.84
  4. Step 4: Simplify right side
    720,845.92x = 412,698,816,681.12
  5. Step 5: Solve for x
    x = 412,698,816,681.12/720,845.92
  6. Step 6: Final answer
    x = 572,520.15

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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.