Home / 1,289,947.16-1,780,146.99-709,195.46

Finding the Fourth Proportional to 1,289,947.16, 1,780,146.99 and 709,195.46

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Solution

The fourth proportional to 1,289,947.16, 1,780,146.99 and 709,195.46 is: 978,700.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,947.16 : 1,780,146.99 = 709,195.46 : x
  2. Step 2: Convert to fraction form
    1,289,947.16/1,780,146.99 = 709,195.46/x
  3. Step 3: Cross multiply
    1,289,947.16x = 1,780,146.99 × 709,195.46
  4. Step 4: Simplify right side
    1,289,947.16x = 1,262,472,154,539.93
  5. Step 5: Solve for x
    x = 1,262,472,154,539.93/1,289,947.16
  6. Step 6: Final answer
    x = 978,700.67

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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.