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Finding the Third Proportional to 409,348,280 and 668,358,090

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Solution

The third proportional to 409,348,280 and 668,358,090 is: 1,091,252,994.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,348,280 : 668,358,090 = 668,358,090 : x
  2. Step 2: Convert to fraction form
    409,348,280/668,358,090 = 668,358,090/x
  3. Step 3: Cross multiply
    409,348,280x = 668,358,090 × 668,358,090
  4. Step 4: Simplify right side
    409,348,280x = 446,702,536,468,448,128
  5. Step 5: Solve for x
    x = 446,702,536,468,448,128/409,348,280
  6. Step 6: Final answer
    x = 1,091,252,994.81

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.