Home / 528,898.20-729,880.38-287,181.24

Finding the Fourth Proportional to 528,898.20, 729,880.38 and 287,181.24

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Solution

The fourth proportional to 528,898.20, 729,880.38 and 287,181.24 is: 396,310.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,898.20 : 729,880.38 = 287,181.24 : x
  2. Step 2: Convert to fraction form
    528,898.20/729,880.38 = 287,181.24/x
  3. Step 3: Cross multiply
    528,898.20x = 729,880.38 × 287,181.24
  4. Step 4: Simplify right side
    528,898.20x = 209,607,952,580.07
  5. Step 5: Solve for x
    x = 209,607,952,580.07/528,898.20
  6. Step 6: Final answer
    x = 396,310.58

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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.