Home / 529,731.72-731,026.11-288,014.40

Finding the Fourth Proportional to 529,731.72, 731,026.11 and 288,014.40

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Solution

The fourth proportional to 529,731.72, 731,026.11 and 288,014.40 is: 397,457.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,731.72 : 731,026.11 = 288,014.40 : x
  2. Step 2: Convert to fraction form
    529,731.72/731,026.11 = 288,014.40/x
  3. Step 3: Cross multiply
    529,731.72x = 731,026.11 × 288,014.40
  4. Step 4: Simplify right side
    529,731.72x = 210,546,047,255.45
  5. Step 5: Solve for x
    x = 210,546,047,255.45/529,731.72
  6. Step 6: Final answer
    x = 397,457.88

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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.