Home / 1,220,153.36-1,683,912.51-676,459.76

Finding the Fourth Proportional to 1,220,153.36, 1,683,912.51 and 676,459.76

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Solution

The fourth proportional to 1,220,153.36, 1,683,912.51 and 676,459.76 is: 933,570.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,153.36 : 1,683,912.51 = 676,459.76 : x
  2. Step 2: Convert to fraction form
    1,220,153.36/1,683,912.51 = 676,459.76/x
  3. Step 3: Cross multiply
    1,220,153.36x = 1,683,912.51 × 676,459.76
  4. Step 4: Simplify right side
    1,220,153.36x = 1,139,099,043,956.04
  5. Step 5: Solve for x
    x = 1,139,099,043,956.04/1,220,153.36
  6. Step 6: Final answer
    x = 933,570.39

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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.