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Finding the Fourth Proportional to 620,522.78, 931,064.85 and 316,760.00

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Solution

The fourth proportional to 620,522.78, 931,064.85 and 316,760.00 is: 475,283.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,522.78 : 931,064.85 = 316,760.00 : x
  2. Step 2: Convert to fraction form
    620,522.78/931,064.85 = 316,760.00/x
  3. Step 3: Cross multiply
    620,522.78x = 931,064.85 × 316,760.00
  4. Step 4: Simplify right side
    620,522.78x = 294,924,097,230.68
  5. Step 5: Solve for x
    x = 294,924,097,230.68/620,522.78
  6. Step 6: Final answer
    x = 475,283.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.