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Finding the Third Proportional to 407,246 and 842,428

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Solution

The third proportional to 407,246 and 842,428 is: 1,742,644.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,246 : 842,428 = 842,428 : x
  2. Step 2: Convert to fraction form
    407,246/842,428 = 842,428/x
  3. Step 3: Cross multiply
    407,246x = 842,428 × 842,428
  4. Step 4: Simplify right side
    407,246x = 709,684,935,184
  5. Step 5: Solve for x
    x = 709,684,935,184/407,246
  6. Step 6: Final answer
    x = 1,742,644.34

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.