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Finding the Fourth Proportional to 648,465.64, 894,896.76 and 358,076.56

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Solution

The fourth proportional to 648,465.64, 894,896.76 and 358,076.56 is: 494,153.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,465.64 : 894,896.76 = 358,076.56 : x
  2. Step 2: Convert to fraction form
    648,465.64/894,896.76 = 358,076.56/x
  3. Step 3: Cross multiply
    648,465.64x = 894,896.76 × 358,076.56
  4. Step 4: Simplify right side
    648,465.64x = 320,441,553,375.95
  5. Step 5: Solve for x
    x = 320,441,553,375.95/648,465.64
  6. Step 6: Final answer
    x = 494,153.48

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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.