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Finding the Third Proportional to 989,730 and 2,119,428

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Solution

The third proportional to 989,730 and 2,119,428 is: 4,538,586.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,730 : 2,119,428 = 2,119,428 : x
  2. Step 2: Convert to fraction form
    989,730/2,119,428 = 2,119,428/x
  3. Step 3: Cross multiply
    989,730x = 2,119,428 × 2,119,428
  4. Step 4: Simplify right side
    989,730x = 4,491,975,047,184
  5. Step 5: Solve for x
    x = 4,491,975,047,184/989,730
  6. Step 6: Final answer
    x = 4,538,586.33

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.