Home / 528,721.70-729,648.27-313,862.58

Finding the Fourth Proportional to 528,721.70, 729,648.27 and 313,862.58

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Solution

The fourth proportional to 528,721.70, 729,648.27 and 313,862.58 is: 433,137.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,721.70 : 729,648.27 = 313,862.58 : x
  2. Step 2: Convert to fraction form
    528,721.70/729,648.27 = 313,862.58/x
  3. Step 3: Cross multiply
    528,721.70x = 729,648.27 × 313,862.58
  4. Step 4: Simplify right side
    528,721.70x = 229,009,288,514.74
  5. Step 5: Solve for x
    x = 229,009,288,514.74/528,721.70
  6. Step 6: Final answer
    x = 433,137.68

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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.