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Finding the Fourth Proportional to 505,358.55, 756,829.33 and 291,478.10

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Solution

The fourth proportional to 505,358.55, 756,829.33 and 291,478.10 is: 436,520.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,358.55 : 756,829.33 = 291,478.10 : x
  2. Step 2: Convert to fraction form
    505,358.55/756,829.33 = 291,478.10/x
  3. Step 3: Cross multiply
    505,358.55x = 756,829.33 × 291,478.10
  4. Step 4: Simplify right side
    505,358.55x = 220,599,170,619.83
  5. Step 5: Solve for x
    x = 220,599,170,619.83/505,358.55
  6. Step 6: Final answer
    x = 436,520.11

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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.