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Finding the Fourth Proportional to 674,388.08, 930,644.54 and 368,457.86

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Solution

The fourth proportional to 674,388.08, 930,644.54 and 368,457.86 is: 508,465.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,388.08 : 930,644.54 = 368,457.86 : x
  2. Step 2: Convert to fraction form
    674,388.08/930,644.54 = 368,457.86/x
  3. Step 3: Cross multiply
    674,388.08x = 930,644.54 × 368,457.86
  4. Step 4: Simplify right side
    674,388.08x = 342,903,295,629.08
  5. Step 5: Solve for x
    x = 342,903,295,629.08/674,388.08
  6. Step 6: Final answer
    x = 508,465.83

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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.