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Finding the Fourth Proportional to 480,690.56, 720,404.80 and 353,736.32

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Solution

The fourth proportional to 480,690.56, 720,404.80 and 353,736.32 is: 530,140.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,690.56 : 720,404.80 = 353,736.32 : x
  2. Step 2: Convert to fraction form
    480,690.56/720,404.80 = 353,736.32/x
  3. Step 3: Cross multiply
    480,690.56x = 720,404.80 × 353,736.32
  4. Step 4: Simplify right side
    480,690.56x = 254,833,342,862.34
  5. Step 5: Solve for x
    x = 254,833,342,862.34/480,690.56
  6. Step 6: Final answer
    x = 530,140.10

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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.