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Finding the Third Proportional to 290,484 and 435,582

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Solution

The third proportional to 290,484 and 435,582 is: 653,157.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,484 : 435,582 = 435,582 : x
  2. Step 2: Convert to fraction form
    290,484/435,582 = 435,582/x
  3. Step 3: Cross multiply
    290,484x = 435,582 × 435,582
  4. Step 4: Simplify right side
    290,484x = 189,731,678,724
  5. Step 5: Solve for x
    x = 189,731,678,724/290,484
  6. Step 6: Final answer
    x = 653,157.07

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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.