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Finding the Fourth Proportional to 1,069,507.67, 1,603,182 and 670,428.67

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Solution

The fourth proportional to 1,069,507.67, 1,603,182 and 670,428.67 is: 1,004,966.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069,507.67 : 1,603,182 = 670,428.67 : x
  2. Step 2: Convert to fraction form
    1,069,507.67/1,603,182 = 670,428.67/x
  3. Step 3: Cross multiply
    1,069,507.67x = 1,603,182 × 670,428.67
  4. Step 4: Simplify right side
    1,069,507.67x = 1,074,819,176,027.94
  5. Step 5: Solve for x
    x = 1,074,819,176,027.94/1,069,507.67
  6. Step 6: Final answer
    x = 1,004,966.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.