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Finding the Third Proportional to 455,368 and 679,360

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Solution

The third proportional to 455,368 and 679,360 is: 1,013,531.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,368 : 679,360 = 679,360 : x
  2. Step 2: Convert to fraction form
    455,368/679,360 = 679,360/x
  3. Step 3: Cross multiply
    455,368x = 679,360 × 679,360
  4. Step 4: Simplify right side
    455,368x = 461,530,009,600
  5. Step 5: Solve for x
    x = 461,530,009,600/455,368
  6. Step 6: Final answer
    x = 1,013,531.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.