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Finding the Third Proportional to 403,828,427.25 and 878,411,774.25

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Solution

The third proportional to 403,828,427.25 and 878,411,774.25 is: 1,910,730,382.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,828,427.25 : 878,411,774.25 = 878,411,774.25 : x
  2. Step 2: Convert to fraction form
    403,828,427.25/878,411,774.25 = 878,411,774.25/x
  3. Step 3: Cross multiply
    403,828,427.25x = 878,411,774.25 × 878,411,774.25
  4. Step 4: Simplify right side
    403,828,427.25x = 771,607,245,141,032,960
  5. Step 5: Solve for x
    x = 771,607,245,141,032,960/403,828,427.25
  6. Step 6: Final answer
    x = 1,910,730,382.20

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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.