Home / 1,222,225.30-1,686,638.50-678,347.06

Finding the Fourth Proportional to 1,222,225.30, 1,686,638.50 and 678,347.06

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Solution

The fourth proportional to 1,222,225.30, 1,686,638.50 and 678,347.06 is: 936,100.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,225.30 : 1,686,638.50 = 678,347.06 : x
  2. Step 2: Convert to fraction form
    1,222,225.30/1,686,638.50 = 678,347.06/x
  3. Step 3: Cross multiply
    1,222,225.30x = 1,686,638.50 × 678,347.06
  4. Step 4: Simplify right side
    1,222,225.30x = 1,144,126,257,628.75
  5. Step 5: Solve for x
    x = 1,144,126,257,628.75/1,222,225.30
  6. Step 6: Final answer
    x = 936,100.94

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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.