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Finding the Third Proportional to 690,509 and 1,506,478

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Solution

The third proportional to 690,509 and 1,506,478 is: 3,286,671.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,509 : 1,506,478 = 1,506,478 : x
  2. Step 2: Convert to fraction form
    690,509/1,506,478 = 1,506,478/x
  3. Step 3: Cross multiply
    690,509x = 1,506,478 × 1,506,478
  4. Step 4: Simplify right side
    690,509x = 2,269,475,964,484
  5. Step 5: Solve for x
    x = 2,269,475,964,484/690,509
  6. Step 6: Final answer
    x = 3,286,671.09

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.