Home / 919,678.45-1,269,266.76-557,091.67

Finding the Fourth Proportional to 919,678.45, 1,269,266.76 and 557,091.67

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Solution

The fourth proportional to 919,678.45, 1,269,266.76 and 557,091.67 is: 768,853.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,678.45 : 1,269,266.76 = 557,091.67 : x
  2. Step 2: Convert to fraction form
    919,678.45/1,269,266.76 = 557,091.67/x
  3. Step 3: Cross multiply
    919,678.45x = 1,269,266.76 × 557,091.67
  4. Step 4: Simplify right side
    919,678.45x = 707,097,939,003.89
  5. Step 5: Solve for x
    x = 707,097,939,003.89/919,678.45
  6. Step 6: Final answer
    x = 768,853.44

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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.