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Finding the Fourth Proportional to 528,648.79, 729,460.54 and 313,874.46

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Solution

The fourth proportional to 528,648.79, 729,460.54 and 313,874.46 is: 433,102.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,648.79 : 729,460.54 = 313,874.46 : x
  2. Step 2: Convert to fraction form
    528,648.79/729,460.54 = 313,874.46/x
  3. Step 3: Cross multiply
    528,648.79x = 729,460.54 × 313,874.46
  4. Step 4: Simplify right side
    528,648.79x = 228,959,033,083.81
  5. Step 5: Solve for x
    x = 228,959,033,083.81/528,648.79
  6. Step 6: Final answer
    x = 433,102.35

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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.