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Finding the Third Proportional to 393,369 and 607,428

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Solution

The third proportional to 393,369 and 607,428 is: 937,971.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,369 : 607,428 = 607,428 : x
  2. Step 2: Convert to fraction form
    393,369/607,428 = 607,428/x
  3. Step 3: Cross multiply
    393,369x = 607,428 × 607,428
  4. Step 4: Simplify right side
    393,369x = 368,968,775,184
  5. Step 5: Solve for x
    x = 368,968,775,184/393,369
  6. Step 6: Final answer
    x = 937,971.15

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.