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Finding the Third Proportional to 258,528 and 540,480

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Solution

The third proportional to 258,528 and 540,480 is: 1,129,930.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,528 : 540,480 = 540,480 : x
  2. Step 2: Convert to fraction form
    258,528/540,480 = 540,480/x
  3. Step 3: Cross multiply
    258,528x = 540,480 × 540,480
  4. Step 4: Simplify right side
    258,528x = 292,118,630,400
  5. Step 5: Solve for x
    x = 292,118,630,400/258,528
  6. Step 6: Final answer
    x = 1,129,930.34

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.