Home / 920,769.30-1,270,857.69-618,788.34

Finding the Fourth Proportional to 920,769.30, 1,270,857.69 and 618,788.34

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Solution

The fourth proportional to 920,769.30, 1,270,857.69 and 618,788.34 is: 854,059.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,769.30 : 1,270,857.69 = 618,788.34 : x
  2. Step 2: Convert to fraction form
    920,769.30/1,270,857.69 = 618,788.34/x
  3. Step 3: Cross multiply
    920,769.30x = 1,270,857.69 × 618,788.34
  4. Step 4: Simplify right side
    920,769.30x = 786,391,920,371.34
  5. Step 5: Solve for x
    x = 786,391,920,371.34/920,769.30
  6. Step 6: Final answer
    x = 854,059.67

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1.5x scale

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.