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Finding the Fourth Proportional to 528,165, 728,868.90 and 301,809.96

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Solution

The fourth proportional to 528,165, 728,868.90 and 301,809.96 is: 416,498.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,165 : 728,868.90 = 301,809.96 : x
  2. Step 2: Convert to fraction form
    528,165/728,868.90 = 301,809.96/x
  3. Step 3: Cross multiply
    528,165x = 728,868.90 × 301,809.96
  4. Step 4: Simplify right side
    528,165x = 219,979,893,554.24
  5. Step 5: Solve for x
    x = 219,979,893,554.24/528,165
  6. Step 6: Final answer
    x = 416,498.43

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1.5x scale

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.