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Finding the Fourth Proportional to 529,412.72, 730,588.06 and 287,695.34

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Solution

The fourth proportional to 529,412.72, 730,588.06 and 287,695.34 is: 397,018.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,412.72 : 730,588.06 = 287,695.34 : x
  2. Step 2: Convert to fraction form
    529,412.72/730,588.06 = 287,695.34/x
  3. Step 3: Cross multiply
    529,412.72x = 730,588.06 × 287,695.34
  4. Step 4: Simplify right side
    529,412.72x = 210,186,780,321.64
  5. Step 5: Solve for x
    x = 210,186,780,321.64/529,412.72
  6. Step 6: Final answer
    x = 397,018.76

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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.