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Finding the Third Proportional to 435,522 and 684,387

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Solution

The third proportional to 435,522 and 684,387 is: 1,075,457.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,522 : 684,387 = 684,387 : x
  2. Step 2: Convert to fraction form
    435,522/684,387 = 684,387/x
  3. Step 3: Cross multiply
    435,522x = 684,387 × 684,387
  4. Step 4: Simplify right side
    435,522x = 468,385,565,769
  5. Step 5: Solve for x
    x = 468,385,565,769/435,522
  6. Step 6: Final answer
    x = 1,075,457.88

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.