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Finding the Fourth Proportional to 628,470.92, 867,308.10 and 342,009.48

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Solution

The fourth proportional to 628,470.92, 867,308.10 and 342,009.48 is: 471,983.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,470.92 : 867,308.10 = 342,009.48 : x
  2. Step 2: Convert to fraction form
    628,470.92/867,308.10 = 342,009.48/x
  3. Step 3: Cross multiply
    628,470.92x = 867,308.10 × 342,009.48
  4. Step 4: Simplify right side
    628,470.92x = 296,627,592,280.79
  5. Step 5: Solve for x
    x = 296,627,592,280.79/628,470.92
  6. Step 6: Final answer
    x = 471,983.00

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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.