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Finding the Fourth Proportional to 661,002.90, 912,349.89 and 374,693.82

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Solution

The fourth proportional to 661,002.90, 912,349.89 and 374,693.82 is: 517,171.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,002.90 : 912,349.89 = 374,693.82 : x
  2. Step 2: Convert to fraction form
    661,002.90/912,349.89 = 374,693.82/x
  3. Step 3: Cross multiply
    661,002.90x = 912,349.89 × 374,693.82
  4. Step 4: Simplify right side
    661,002.90x = 341,851,865,460.68
  5. Step 5: Solve for x
    x = 341,851,865,460.68/661,002.90
  6. Step 6: Final answer
    x = 517,171.51

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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.