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Finding the Fourth Proportional to 480,617.85, 719,613.21 and 345,816.64

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Solution

The fourth proportional to 480,617.85, 719,613.21 and 345,816.64 is: 517,779.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,617.85 : 719,613.21 = 345,816.64 : x
  2. Step 2: Convert to fraction form
    480,617.85/719,613.21 = 345,816.64/x
  3. Step 3: Cross multiply
    480,617.85x = 719,613.21 × 345,816.64
  4. Step 4: Simplify right side
    480,617.85x = 248,854,224,578.14
  5. Step 5: Solve for x
    x = 248,854,224,578.14/480,617.85
  6. Step 6: Final answer
    x = 517,779.82

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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.