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Finding the Fourth Proportional to 666,673.92, 919,051.92 and 475,355.52

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Solution

The fourth proportional to 666,673.92, 919,051.92 and 475,355.52 is: 655,307.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,673.92 : 919,051.92 = 475,355.52 : x
  2. Step 2: Convert to fraction form
    666,673.92/919,051.92 = 475,355.52/x
  3. Step 3: Cross multiply
    666,673.92x = 919,051.92 × 475,355.52
  4. Step 4: Simplify right side
    666,673.92x = 436,876,403,338.60
  5. Step 5: Solve for x
    x = 436,876,403,338.60/666,673.92
  6. Step 6: Final answer
    x = 655,307.48

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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.