Home / 529,128.50-730,202.67-287,415.81

Finding the Fourth Proportional to 529,128.50, 730,202.67 and 287,415.81

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Solution

The fourth proportional to 529,128.50, 730,202.67 and 287,415.81 is: 396,636.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,128.50 : 730,202.67 = 287,415.81 : x
  2. Step 2: Convert to fraction form
    529,128.50/730,202.67 = 287,415.81/x
  3. Step 3: Cross multiply
    529,128.50x = 730,202.67 × 287,415.81
  4. Step 4: Simplify right side
    529,128.50x = 209,871,791,862.21
  5. Step 5: Solve for x
    x = 209,871,791,862.21/529,128.50
  6. Step 6: Final answer
    x = 396,636.72

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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.