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Finding the Fourth Proportional to 529,423.21, 730,602.48 and 287,705.85

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Solution

The fourth proportional to 529,423.21, 730,602.48 and 287,705.85 is: 397,033.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,423.21 : 730,602.48 = 287,705.85 : x
  2. Step 2: Convert to fraction form
    529,423.21/730,602.48 = 287,705.85/x
  3. Step 3: Cross multiply
    529,423.21x = 730,602.48 × 287,705.85
  4. Step 4: Simplify right side
    529,423.21x = 210,198,607,520.51
  5. Step 5: Solve for x
    x = 210,198,607,520.51/529,423.21
  6. Step 6: Final answer
    x = 397,033.23

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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.