Home / 1,220,384.21-1,684,316.61-779,049.43

Finding the Fourth Proportional to 1,220,384.21, 1,684,316.61 and 779,049.43

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Solution

The fourth proportional to 1,220,384.21, 1,684,316.61 and 779,049.43 is: 1,075,207.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,384.21 : 1,684,316.61 = 779,049.43 : x
  2. Step 2: Convert to fraction form
    1,220,384.21/1,684,316.61 = 779,049.43/x
  3. Step 3: Cross multiply
    1,220,384.21x = 1,684,316.61 × 779,049.43
  4. Step 4: Simplify right side
    1,220,384.21x = 1,312,165,890,749.24
  5. Step 5: Solve for x
    x = 1,312,165,890,749.24/1,220,384.21
  6. Step 6: Final answer
    x = 1,075,207.21

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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.