Home / 1,391,459.94-1,920,181.23-779,638.50

Finding the Fourth Proportional to 1,391,459.94, 1,920,181.23 and 779,638.50

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Solution

The fourth proportional to 1,391,459.94, 1,920,181.23 and 779,638.50 is: 1,075,882.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,459.94 : 1,920,181.23 = 779,638.50 : x
  2. Step 2: Convert to fraction form
    1,391,459.94/1,920,181.23 = 779,638.50/x
  3. Step 3: Cross multiply
    1,391,459.94x = 1,920,181.23 × 779,638.50
  4. Step 4: Simplify right side
    1,391,459.94x = 1,497,047,213,885.36
  5. Step 5: Solve for x
    x = 1,497,047,213,885.36/1,391,459.94
  6. Step 6: Final answer
    x = 1,075,882.37

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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.