Home / 559,828-772,838.45-387,876.34

Finding the Fourth Proportional to 559,828, 772,838.45 and 387,876.34

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Solution

The fourth proportional to 559,828, 772,838.45 and 387,876.34 is: 535,460.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,828 : 772,838.45 = 387,876.34 : x
  2. Step 2: Convert to fraction form
    559,828/772,838.45 = 387,876.34/x
  3. Step 3: Cross multiply
    559,828x = 772,838.45 × 387,876.34
  4. Step 4: Simplify right side
    559,828x = 299,765,749,397.27
  5. Step 5: Solve for x
    x = 299,765,749,397.27/559,828
  6. Step 6: Final answer
    x = 535,460.44

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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.