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Finding the Fourth Proportional to 898,705,419.20, 1,259,886,280 and 898,705,419.20

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Solution

The fourth proportional to 898,705,419.20, 1,259,886,280 and 898,705,419.20 is: 1,259,886,280

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,705,419.20 : 1,259,886,280 = 898,705,419.20 : x
  2. Step 2: Convert to fraction form
    898,705,419.20/1,259,886,280 = 898,705,419.20/x
  3. Step 3: Cross multiply
    898,705,419.20x = 1,259,886,280 × 898,705,419.20
  4. Step 4: Simplify right side
    898,705,419.20x = 1,132,266,627,411,728,640
  5. Step 5: Solve for x
    x = 1,132,266,627,411,728,640/898,705,419.20
  6. Step 6: Final answer
    x = 1,259,886,280

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.