Home / 1,420,236.29-1,959,938.61-808,428.45

Finding the Fourth Proportional to 1,420,236.29, 1,959,938.61 and 808,428.45

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Solution

The fourth proportional to 1,420,236.29, 1,959,938.61 and 808,428.45 is: 1,115,638.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,236.29 : 1,959,938.61 = 808,428.45 : x
  2. Step 2: Convert to fraction form
    1,420,236.29/1,959,938.61 = 808,428.45/x
  3. Step 3: Cross multiply
    1,420,236.29x = 1,959,938.61 × 808,428.45
  4. Step 4: Simplify right side
    1,420,236.29x = 1,584,470,132,577.45
  5. Step 5: Solve for x
    x = 1,584,470,132,577.45/1,420,236.29
  6. Step 6: Final answer
    x = 1,115,638.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.