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Finding the Fourth Proportional to 528,650.79, 729,463.29 and 313,876.47

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Solution

The fourth proportional to 528,650.79, 729,463.29 and 313,876.47 is: 433,105.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,650.79 : 729,463.29 = 313,876.47 : x
  2. Step 2: Convert to fraction form
    528,650.79/729,463.29 = 313,876.47/x
  3. Step 3: Cross multiply
    528,650.79x = 729,463.29 × 313,876.47
  4. Step 4: Simplify right side
    528,650.79x = 228,961,362,459.79
  5. Step 5: Solve for x
    x = 228,961,362,459.79/528,650.79
  6. Step 6: Final answer
    x = 433,105.12

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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.