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Finding the Fourth Proportional to 529,457.30, 730,656.69 and 287,739.86

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Solution

The fourth proportional to 529,457.30, 730,656.69 and 287,739.86 is: 397,084.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,457.30 : 730,656.69 = 287,739.86 : x
  2. Step 2: Convert to fraction form
    529,457.30/730,656.69 = 287,739.86/x
  3. Step 3: Cross multiply
    529,457.30x = 730,656.69 × 287,739.86
  4. Step 4: Simplify right side
    529,457.30x = 210,239,050,035.38
  5. Step 5: Solve for x
    x = 210,239,050,035.38/529,457.30
  6. Step 6: Final answer
    x = 397,084.06

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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.