Home / 1,220,153.86-1,683,913.20-676,460.26

Finding the Fourth Proportional to 1,220,153.86, 1,683,913.20 and 676,460.26

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Solution

The fourth proportional to 1,220,153.86, 1,683,913.20 and 676,460.26 is: 933,571.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,153.86 : 1,683,913.20 = 676,460.26 : x
  2. Step 2: Convert to fraction form
    1,220,153.86/1,683,913.20 = 676,460.26/x
  3. Step 3: Cross multiply
    1,220,153.86x = 1,683,913.20 × 676,460.26
  4. Step 4: Simplify right side
    1,220,153.86x = 1,139,100,352,669.87
  5. Step 5: Solve for x
    x = 1,139,100,352,669.87/1,220,153.86
  6. Step 6: Final answer
    x = 933,571.08

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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.