Home / 1,222,225.55-1,686,638.84-678,347.31

Finding the Fourth Proportional to 1,222,225.55, 1,686,638.84 and 678,347.31

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Solution

The fourth proportional to 1,222,225.55, 1,686,638.84 and 678,347.31 is: 936,101.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,225.55 : 1,686,638.84 = 678,347.31 : x
  2. Step 2: Convert to fraction form
    1,222,225.55/1,686,638.84 = 678,347.31/x
  3. Step 3: Cross multiply
    1,222,225.55x = 1,686,638.84 × 678,347.31
  4. Step 4: Simplify right side
    1,222,225.55x = 1,144,126,913,318.19
  5. Step 5: Solve for x
    x = 1,144,126,913,318.19/1,222,225.55
  6. Step 6: Final answer
    x = 936,101.29

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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.