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Finding the Fourth Proportional to 674,011.83, 930,143.72 and 368,097.21

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Solution

The fourth proportional to 674,011.83, 930,143.72 and 368,097.21 is: 507,978.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,011.83 : 930,143.72 = 368,097.21 : x
  2. Step 2: Convert to fraction form
    674,011.83/930,143.72 = 368,097.21/x
  3. Step 3: Cross multiply
    674,011.83x = 930,143.72 × 368,097.21
  4. Step 4: Simplify right side
    674,011.83x = 342,383,306,390.54
  5. Step 5: Solve for x
    x = 342,383,306,390.54/674,011.83
  6. Step 6: Final answer
    x = 507,978.19

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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.