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Finding the Fourth Proportional to 648,140.95, 894,300.97 and 372,445.54

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Solution

The fourth proportional to 648,140.95, 894,300.97 and 372,445.54 is: 513,898.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,140.95 : 894,300.97 = 372,445.54 : x
  2. Step 2: Convert to fraction form
    648,140.95/894,300.97 = 372,445.54/x
  3. Step 3: Cross multiply
    648,140.95x = 894,300.97 × 372,445.54
  4. Step 4: Simplify right side
    648,140.95x = 333,078,407,694.17
  5. Step 5: Solve for x
    x = 333,078,407,694.17/648,140.95
  6. Step 6: Final answer
    x = 513,898.11

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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.