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Finding the Third Proportional to 459,280 and 670,772

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Solution

The third proportional to 459,280 and 670,772 is: 979,653.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,280 : 670,772 = 670,772 : x
  2. Step 2: Convert to fraction form
    459,280/670,772 = 670,772/x
  3. Step 3: Cross multiply
    459,280x = 670,772 × 670,772
  4. Step 4: Simplify right side
    459,280x = 449,935,075,984
  5. Step 5: Solve for x
    x = 449,935,075,984/459,280
  6. Step 6: Final answer
    x = 979,653.10

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.