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Finding the Fourth Proportional to 529,420.02, 730,597.23 and 287,698.02

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Solution

The fourth proportional to 529,420.02, 730,597.23 and 287,698.02 is: 397,021.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,420.02 : 730,597.23 = 287,698.02 : x
  2. Step 2: Convert to fraction form
    529,420.02/730,597.23 = 287,698.02/x
  3. Step 3: Cross multiply
    529,420.02x = 730,597.23 × 287,698.02
  4. Step 4: Simplify right side
    529,420.02x = 210,191,376,488.49
  5. Step 5: Solve for x
    x = 210,191,376,488.49/529,420.02
  6. Step 6: Final answer
    x = 397,021.96

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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.