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Finding the Fourth Proportional to 578,887.48, 866,835.76 and 399,526.36

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Solution

The fourth proportional to 578,887.48, 866,835.76 and 399,526.36 is: 598,257.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,887.48 : 866,835.76 = 399,526.36 : x
  2. Step 2: Convert to fraction form
    578,887.48/866,835.76 = 399,526.36/x
  3. Step 3: Cross multiply
    578,887.48x = 866,835.76 × 399,526.36
  4. Step 4: Simplify right side
    578,887.48x = 346,323,735,910.63
  5. Step 5: Solve for x
    x = 346,323,735,910.63/578,887.48
  6. Step 6: Final answer
    x = 598,257.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.