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Finding the Third Proportional to 287,892,369 and 621,658,380

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Solution

The third proportional to 287,892,369 and 621,658,380 is: 1,342,373,689.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,892,369 : 621,658,380 = 621,658,380 : x
  2. Step 2: Convert to fraction form
    287,892,369/621,658,380 = 621,658,380/x
  3. Step 3: Cross multiply
    287,892,369x = 621,658,380 × 621,658,380
  4. Step 4: Simplify right side
    287,892,369x = 386,459,141,424,224,384
  5. Step 5: Solve for x
    x = 386,459,141,424,224,384/287,892,369
  6. Step 6: Final answer
    x = 1,342,373,689.05

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.