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Finding the Third Proportional to 418,379,484 and 912,090,840

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Solution

The third proportional to 418,379,484 and 912,090,840 is: 1,988,409,403.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,379,484 : 912,090,840 = 912,090,840 : x
  2. Step 2: Convert to fraction form
    418,379,484/912,090,840 = 912,090,840/x
  3. Step 3: Cross multiply
    418,379,484x = 912,090,840 × 912,090,840
  4. Step 4: Simplify right side
    418,379,484x = 831,909,700,411,905,536
  5. Step 5: Solve for x
    x = 831,909,700,411,905,536/418,379,484
  6. Step 6: Final answer
    x = 1,988,409,403.97

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.