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Finding the Fourth Proportional to 577,139.85, 796,439.09 and 315,483.53

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Solution

The fourth proportional to 577,139.85, 796,439.09 and 315,483.53 is: 435,359.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,139.85 : 796,439.09 = 315,483.53 : x
  2. Step 2: Convert to fraction form
    577,139.85/796,439.09 = 315,483.53/x
  3. Step 3: Cross multiply
    577,139.85x = 796,439.09 × 315,483.53
  4. Step 4: Simplify right side
    577,139.85x = 251,263,412,349.70
  5. Step 5: Solve for x
    x = 251,263,412,349.70/577,139.85
  6. Step 6: Final answer
    x = 435,359.67

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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.