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Finding the Fourth Proportional to 972,290.40, 1,461,200.40 and 850,639.20

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Solution

The fourth proportional to 972,290.40, 1,461,200.40 and 850,639.20 is: 1,278,377.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    972,290.40 : 1,461,200.40 = 850,639.20 : x
  2. Step 2: Convert to fraction form
    972,290.40/1,461,200.40 = 850,639.20/x
  3. Step 3: Cross multiply
    972,290.40x = 1,461,200.40 × 850,639.20
  4. Step 4: Simplify right side
    972,290.40x = 1,242,954,339,295.68
  5. Step 5: Solve for x
    x = 1,242,954,339,295.68/972,290.40
  6. Step 6: Final answer
    x = 1,278,377.67

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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.