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Finding the Fourth Proportional to 512,362.20, 768,543.30 and 477,370.20

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Solution

The fourth proportional to 512,362.20, 768,543.30 and 477,370.20 is: 716,055.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,362.20 : 768,543.30 = 477,370.20 : x
  2. Step 2: Convert to fraction form
    512,362.20/768,543.30 = 477,370.20/x
  3. Step 3: Cross multiply
    512,362.20x = 768,543.30 × 477,370.20
  4. Step 4: Simplify right side
    512,362.20x = 366,879,668,829.66
  5. Step 5: Solve for x
    x = 366,879,668,829.66/512,362.20
  6. Step 6: Final answer
    x = 716,055.30

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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.