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Finding the Fourth Proportional to 666,456.69, 919,707.48 and 360,532.35

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Solution

The fourth proportional to 666,456.69, 919,707.48 and 360,532.35 is: 497,533.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,456.69 : 919,707.48 = 360,532.35 : x
  2. Step 2: Convert to fraction form
    666,456.69/919,707.48 = 360,532.35/x
  3. Step 3: Cross multiply
    666,456.69x = 919,707.48 × 360,532.35
  4. Step 4: Simplify right side
    666,456.69x = 331,584,299,076.98
  5. Step 5: Solve for x
    x = 331,584,299,076.98/666,456.69
  6. Step 6: Final answer
    x = 497,533.15

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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.