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Finding the Fourth Proportional to 508,812.88, 702,126.60 and 282,440.56

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Solution

The fourth proportional to 508,812.88, 702,126.60 and 282,440.56 is: 389,748.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,812.88 : 702,126.60 = 282,440.56 : x
  2. Step 2: Convert to fraction form
    508,812.88/702,126.60 = 282,440.56/x
  3. Step 3: Cross multiply
    508,812.88x = 702,126.60 × 282,440.56
  4. Step 4: Simplify right side
    508,812.88x = 198,309,030,094.90
  5. Step 5: Solve for x
    x = 198,309,030,094.90/508,812.88
  6. Step 6: Final answer
    x = 389,748.45

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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.