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Finding the Fourth Proportional to 529,420.88, 730,771.08 and 338,947.28

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Solution

The fourth proportional to 529,420.88, 730,771.08 and 338,947.28 is: 467,856.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,420.88 : 730,771.08 = 338,947.28 : x
  2. Step 2: Convert to fraction form
    529,420.88/730,771.08 = 338,947.28/x
  3. Step 3: Cross multiply
    529,420.88x = 730,771.08 × 338,947.28
  4. Step 4: Simplify right side
    529,420.88x = 247,692,869,868.66
  5. Step 5: Solve for x
    x = 247,692,869,868.66/529,420.88
  6. Step 6: Final answer
    x = 467,856.25

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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.