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Finding the Fourth Proportional to 556,632.48, 768,225.28 and 311,710.52

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Solution

The fourth proportional to 556,632.48, 768,225.28 and 311,710.52 is: 430,201.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,632.48 : 768,225.28 = 311,710.52 : x
  2. Step 2: Convert to fraction form
    556,632.48/768,225.28 = 311,710.52/x
  3. Step 3: Cross multiply
    556,632.48x = 768,225.28 × 311,710.52
  4. Step 4: Simplify right side
    556,632.48x = 239,463,901,505.95
  5. Step 5: Solve for x
    x = 239,463,901,505.95/556,632.48
  6. Step 6: Final answer
    x = 430,201.09

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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.