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Finding the Fourth Proportional to 529,471.80, 730,676.76 and 287,754.40

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Solution

The fourth proportional to 529,471.80, 730,676.76 and 287,754.40 is: 397,104.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,471.80 : 730,676.76 = 287,754.40 : x
  2. Step 2: Convert to fraction form
    529,471.80/730,676.76 = 287,754.40/x
  3. Step 3: Cross multiply
    529,471.80x = 730,676.76 × 287,754.40
  4. Step 4: Simplify right side
    529,471.80x = 210,255,452,667.74
  5. Step 5: Solve for x
    x = 210,255,452,667.74/529,471.80
  6. Step 6: Final answer
    x = 397,104.16

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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.