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Finding the Fourth Proportional to 529,520.09, 730,742.18 and 287,802.60

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Solution

The fourth proportional to 529,520.09, 730,742.18 and 287,802.60 is: 397,170.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,520.09 : 730,742.18 = 287,802.60 : x
  2. Step 2: Convert to fraction form
    529,520.09/730,742.18 = 287,802.60/x
  3. Step 3: Cross multiply
    529,520.09x = 730,742.18 × 287,802.60
  4. Step 4: Simplify right side
    529,520.09x = 210,309,499,333.67
  5. Step 5: Solve for x
    x = 210,309,499,333.67/529,520.09
  6. Step 6: Final answer
    x = 397,170.01

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1.5x scale

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.