Home / 1,420,822.74-1,961,380.58-905,283.45

Finding the Fourth Proportional to 1,420,822.74, 1,961,380.58 and 905,283.45

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Solution

The fourth proportional to 1,420,822.74, 1,961,380.58 and 905,283.45 is: 1,249,702.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,822.74 : 1,961,380.58 = 905,283.45 : x
  2. Step 2: Convert to fraction form
    1,420,822.74/1,961,380.58 = 905,283.45/x
  3. Step 3: Cross multiply
    1,420,822.74x = 1,961,380.58 × 905,283.45
  4. Step 4: Simplify right side
    1,420,822.74x = 1,775,605,374,547.76
  5. Step 5: Solve for x
    x = 1,775,605,374,547.76/1,420,822.74
  6. Step 6: Final answer
    x = 1,249,702.25

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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.