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Finding the Fourth Proportional to 529,459.66, 730,658.92 and 287,742.28

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Solution

The fourth proportional to 529,459.66, 730,658.92 and 287,742.28 is: 397,086.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,459.66 : 730,658.92 = 287,742.28 : x
  2. Step 2: Convert to fraction form
    529,459.66/730,658.92 = 287,742.28/x
  3. Step 3: Cross multiply
    529,459.66x = 730,658.92 × 287,742.28
  4. Step 4: Simplify right side
    529,459.66x = 210,241,460,997.14
  5. Step 5: Solve for x
    x = 210,241,460,997.14/529,459.66
  6. Step 6: Final answer
    x = 397,086.84

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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.