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Finding the Fourth Proportional to 528,657.83, 729,548.64 and 286,940.50

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Solution

The fourth proportional to 528,657.83, 729,548.64 and 286,940.50 is: 395,978.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,657.83 : 729,548.64 = 286,940.50 : x
  2. Step 2: Convert to fraction form
    528,657.83/729,548.64 = 286,940.50/x
  3. Step 3: Cross multiply
    528,657.83x = 729,548.64 × 286,940.50
  4. Step 4: Simplify right side
    528,657.83x = 209,337,050,553.37
  5. Step 5: Solve for x
    x = 209,337,050,553.37/528,657.83
  6. Step 6: Final answer
    x = 395,978.34

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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.