Home / 1,220,321.84-1,683,045.64-858,942

Finding the Fourth Proportional to 1,220,321.84, 1,683,045.64 and 858,942

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Solution

The fourth proportional to 1,220,321.84, 1,683,045.64 and 858,942 is: 1,184,637.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,321.84 : 1,683,045.64 = 858,942 : x
  2. Step 2: Convert to fraction form
    1,220,321.84/1,683,045.64 = 858,942/x
  3. Step 3: Cross multiply
    1,220,321.84x = 1,683,045.64 × 858,942
  4. Step 4: Simplify right side
    1,220,321.84x = 1,445,638,588,112.88
  5. Step 5: Solve for x
    x = 1,445,638,588,112.88/1,220,321.84
  6. Step 6: Final answer
    x = 1,184,637.15

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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.