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Finding the Third Proportional to 405,292 and 608,154

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Solution

The third proportional to 405,292 and 608,154 is: 912,555.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,292 : 608,154 = 608,154 : x
  2. Step 2: Convert to fraction form
    405,292/608,154 = 608,154/x
  3. Step 3: Cross multiply
    405,292x = 608,154 × 608,154
  4. Step 4: Simplify right side
    405,292x = 369,851,287,716
  5. Step 5: Solve for x
    x = 369,851,287,716/405,292
  6. Step 6: Final answer
    x = 912,555.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.