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Finding the Fourth Proportional to 674,058.66, 930,207.29 and 383,656.05

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Solution

The fourth proportional to 674,058.66, 930,207.29 and 383,656.05 is: 529,448.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,058.66 : 930,207.29 = 383,656.05 : x
  2. Step 2: Convert to fraction form
    674,058.66/930,207.29 = 383,656.05/x
  3. Step 3: Cross multiply
    674,058.66x = 930,207.29 × 383,656.05
  4. Step 4: Simplify right side
    674,058.66x = 356,879,654,562.61
  5. Step 5: Solve for x
    x = 356,879,654,562.61/674,058.66
  6. Step 6: Final answer
    x = 529,448.96

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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.