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Finding the Fourth Proportional to 529,520.96, 730,746.34 and 287,803.46

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Solution

The fourth proportional to 529,520.96, 730,746.34 and 287,803.46 is: 397,172.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,520.96 : 730,746.34 = 287,803.46 : x
  2. Step 2: Convert to fraction form
    529,520.96/730,746.34 = 287,803.46/x
  3. Step 3: Cross multiply
    529,520.96x = 730,746.34 × 287,803.46
  4. Step 4: Simplify right side
    529,520.96x = 210,311,326,141.69
  5. Step 5: Solve for x
    x = 210,311,326,141.69/529,520.96
  6. Step 6: Final answer
    x = 397,172.81

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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.