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Finding the Third Proportional to 407,428 and 896,072

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Solution

The third proportional to 407,428 and 896,072 is: 1,970,765.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,428 : 896,072 = 896,072 : x
  2. Step 2: Convert to fraction form
    407,428/896,072 = 896,072/x
  3. Step 3: Cross multiply
    407,428x = 896,072 × 896,072
  4. Step 4: Simplify right side
    407,428x = 802,945,029,184
  5. Step 5: Solve for x
    x = 802,945,029,184/407,428
  6. Step 6: Final answer
    x = 1,970,765.46

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.