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Finding the Fourth Proportional to 620,523.47, 931,065.91 and 316,760.71

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Solution

The fourth proportional to 620,523.47, 931,065.91 and 316,760.71 is: 475,284.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,523.47 : 931,065.91 = 316,760.71 : x
  2. Step 2: Convert to fraction form
    620,523.47/931,065.91 = 316,760.71/x
  3. Step 3: Cross multiply
    620,523.47x = 931,065.91 × 316,760.71
  4. Step 4: Simplify right side
    620,523.47x = 294,925,097,334.58
  5. Step 5: Solve for x
    x = 294,925,097,334.58/620,523.47
  6. Step 6: Final answer
    x = 475,284.36

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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.