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Finding the Fourth Proportional to 528,647.79, 729,459.16 and 313,873.46

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Solution

The fourth proportional to 528,647.79, 729,459.16 and 313,873.46 is: 433,100.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,647.79 : 729,459.16 = 313,873.46 : x
  2. Step 2: Convert to fraction form
    528,647.79/729,459.16 = 313,873.46/x
  3. Step 3: Cross multiply
    528,647.79x = 729,459.16 × 313,873.46
  4. Step 4: Simplify right side
    528,647.79x = 228,957,866,288.40
  5. Step 5: Solve for x
    x = 228,957,866,288.40/528,647.79
  6. Step 6: Final answer
    x = 433,100.96

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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.