Home / 529,960.76-731,308.20-288,238.40

Finding the Fourth Proportional to 529,960.76, 731,308.20 and 288,238.40

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Solution

The fourth proportional to 529,960.76, 731,308.20 and 288,238.40 is: 397,748.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,960.76 : 731,308.20 = 288,238.40 : x
  2. Step 2: Convert to fraction form
    529,960.76/731,308.20 = 288,238.40/x
  3. Step 3: Cross multiply
    529,960.76x = 731,308.20 × 288,238.40
  4. Step 4: Simplify right side
    529,960.76x = 210,791,105,474.88
  5. Step 5: Solve for x
    x = 210,791,105,474.88/529,960.76
  6. Step 6: Final answer
    x = 397,748.52

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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.