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Finding the Fourth Proportional to 660,830.60, 912,092.91 and 374,508.56

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Solution

The fourth proportional to 660,830.60, 912,092.91 and 374,508.56 is: 516,904.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,830.60 : 912,092.91 = 374,508.56 : x
  2. Step 2: Convert to fraction form
    660,830.60/912,092.91 = 374,508.56/x
  3. Step 3: Cross multiply
    660,830.60x = 912,092.91 × 374,508.56
  4. Step 4: Simplify right side
    660,830.60x = 341,586,603,186.14
  5. Step 5: Solve for x
    x = 341,586,603,186.14/660,830.60
  6. Step 6: Final answer
    x = 516,904.94

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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.