Home / 628,828.21-947,479.33-518,969.13

Finding the Fourth Proportional to 628,828.21, 947,479.33 and 518,969.13

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Solution

The fourth proportional to 628,828.21, 947,479.33 and 518,969.13 is: 781,950.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,828.21 : 947,479.33 = 518,969.13 : x
  2. Step 2: Convert to fraction form
    628,828.21/947,479.33 = 518,969.13/x
  3. Step 3: Cross multiply
    628,828.21x = 947,479.33 × 518,969.13
  4. Step 4: Simplify right side
    628,828.21x = 491,712,517,759.55
  5. Step 5: Solve for x
    x = 491,712,517,759.55/628,828.21
  6. Step 6: Final answer
    x = 781,950.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.