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Finding the Fourth Proportional to 529,779.74, 731,105.16 and 288,063.94

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Solution

The fourth proportional to 529,779.74, 731,105.16 and 288,063.94 is: 397,533.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,779.74 : 731,105.16 = 288,063.94 : x
  2. Step 2: Convert to fraction form
    529,779.74/731,105.16 = 288,063.94/x
  3. Step 3: Cross multiply
    529,779.74x = 731,105.16 × 288,063.94
  4. Step 4: Simplify right side
    529,779.74x = 210,605,032,943.93
  5. Step 5: Solve for x
    x = 210,605,032,943.93/529,779.74
  6. Step 6: Final answer
    x = 397,533.20

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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.