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Finding the Fourth Proportional to 480,693.75, 720,409.90 and 353,739.75

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Solution

The fourth proportional to 480,693.75, 720,409.90 and 353,739.75 is: 530,145.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,693.75 : 720,409.90 = 353,739.75 : x
  2. Step 2: Convert to fraction form
    480,693.75/720,409.90 = 353,739.75/x
  3. Step 3: Cross multiply
    480,693.75x = 720,409.90 × 353,739.75
  4. Step 4: Simplify right side
    480,693.75x = 254,837,617,923.53
  5. Step 5: Solve for x
    x = 254,837,617,923.53/480,693.75
  6. Step 6: Final answer
    x = 530,145.48

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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.