Home / 528,629.92-729,516.28-286,915.39

Finding the Fourth Proportional to 528,629.92, 729,516.28 and 286,915.39

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Solution

The fourth proportional to 528,629.92, 729,516.28 and 286,915.39 is: 395,947.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,629.92 : 729,516.28 = 286,915.39 : x
  2. Step 2: Convert to fraction form
    528,629.92/729,516.28 = 286,915.39/x
  3. Step 3: Cross multiply
    528,629.92x = 729,516.28 × 286,915.39
  4. Step 4: Simplify right side
    528,629.92x = 209,309,445,446.47
  5. Step 5: Solve for x
    x = 209,309,445,446.47/528,629.92
  6. Step 6: Final answer
    x = 395,947.03

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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.