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Finding the Fourth Proportional to 648,208.79, 894,445.59 and 361,740.95

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Solution

The fourth proportional to 648,208.79, 894,445.59 and 361,740.95 is: 499,156.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,208.79 : 894,445.59 = 361,740.95 : x
  2. Step 2: Convert to fraction form
    648,208.79/894,445.59 = 361,740.95/x
  3. Step 3: Cross multiply
    648,208.79x = 894,445.59 × 361,740.95
  4. Step 4: Simplify right side
    648,208.79x = 323,557,592,977.68
  5. Step 5: Solve for x
    x = 323,557,592,977.68/648,208.79
  6. Step 6: Final answer
    x = 499,156.45

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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.