Home / 1,318,420.70-1,819,458.94-745,448.57

Finding the Fourth Proportional to 1,318,420.70, 1,819,458.94 and 745,448.57

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Solution

The fourth proportional to 1,318,420.70, 1,819,458.94 and 745,448.57 is: 1,028,740.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,420.70 : 1,819,458.94 = 745,448.57 : x
  2. Step 2: Convert to fraction form
    1,318,420.70/1,819,458.94 = 745,448.57/x
  3. Step 3: Cross multiply
    1,318,420.70x = 1,819,458.94 × 745,448.57
  4. Step 4: Simplify right side
    1,318,420.70x = 1,356,313,055,899.42
  5. Step 5: Solve for x
    x = 1,356,313,055,899.42/1,318,420.70
  6. Step 6: Final answer
    x = 1,028,740.72

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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.