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Finding the Fourth Proportional to 664,055.73, 916,440.21 and 377,602.47

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Solution

The fourth proportional to 664,055.73, 916,440.21 and 377,602.47 is: 521,116.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,055.73 : 916,440.21 = 377,602.47 : x
  2. Step 2: Convert to fraction form
    664,055.73/916,440.21 = 377,602.47/x
  3. Step 3: Cross multiply
    664,055.73x = 916,440.21 × 377,602.47
  4. Step 4: Simplify right side
    664,055.73x = 346,050,086,903.32
  5. Step 5: Solve for x
    x = 346,050,086,903.32/664,055.73
  6. Step 6: Final answer
    x = 521,116.03

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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.