Home / 487,044.45-671,686.16-305,773.27

Finding the Fourth Proportional to 487,044.45, 671,686.16 and 305,773.27

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Solution

The fourth proportional to 487,044.45, 671,686.16 and 305,773.27 is: 421,693.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,044.45 : 671,686.16 = 305,773.27 : x
  2. Step 2: Convert to fraction form
    487,044.45/671,686.16 = 305,773.27/x
  3. Step 3: Cross multiply
    487,044.45x = 671,686.16 × 305,773.27
  4. Step 4: Simplify right side
    487,044.45x = 205,383,670,348.86
  5. Step 5: Solve for x
    x = 205,383,670,348.86/487,044.45
  6. Step 6: Final answer
    x = 421,693.89

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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.