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Finding the Fourth Proportional to 674,388.86, 930,645.75 and 368,458.67

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Solution

The fourth proportional to 674,388.86, 930,645.75 and 368,458.67 is: 508,467.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,388.86 : 930,645.75 = 368,458.67 : x
  2. Step 2: Convert to fraction form
    674,388.86/930,645.75 = 368,458.67/x
  3. Step 3: Cross multiply
    674,388.86x = 930,645.75 × 368,458.67
  4. Step 4: Simplify right side
    674,388.86x = 342,904,497,612.77
  5. Step 5: Solve for x
    x = 342,904,497,612.77/674,388.86
  6. Step 6: Final answer
    x = 508,467.03

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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.