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Finding the Fourth Proportional to 529,480.33, 730,688.51 and 287,762.92

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Solution

The fourth proportional to 529,480.33, 730,688.51 and 287,762.92 is: 397,115.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,480.33 : 730,688.51 = 287,762.92 : x
  2. Step 2: Convert to fraction form
    529,480.33/730,688.51 = 287,762.92/x
  3. Step 3: Cross multiply
    529,480.33x = 730,688.51 × 287,762.92
  4. Step 4: Simplify right side
    529,480.33x = 210,265,058,140.74
  5. Step 5: Solve for x
    x = 210,265,058,140.74/529,480.33
  6. Step 6: Final answer
    x = 397,115.90

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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.