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Finding the Third Proportional to 320,506 and 498,240

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Solution

The third proportional to 320,506 and 498,240 is: 774,534.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,506 : 498,240 = 498,240 : x
  2. Step 2: Convert to fraction form
    320,506/498,240 = 498,240/x
  3. Step 3: Cross multiply
    320,506x = 498,240 × 498,240
  4. Step 4: Simplify right side
    320,506x = 248,243,097,600
  5. Step 5: Solve for x
    x = 248,243,097,600/320,506
  6. Step 6: Final answer
    x = 774,534.95

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.