Home / 1,318,279.85-1,819,209.81-774,465.21

Finding the Fourth Proportional to 1,318,279.85, 1,819,209.81 and 774,465.21

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Solution

The fourth proportional to 1,318,279.85, 1,819,209.81 and 774,465.21 is: 1,068,752.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,279.85 : 1,819,209.81 = 774,465.21 : x
  2. Step 2: Convert to fraction form
    1,318,279.85/1,819,209.81 = 774,465.21/x
  3. Step 3: Cross multiply
    1,318,279.85x = 1,819,209.81 × 774,465.21
  4. Step 4: Simplify right side
    1,318,279.85x = 1,408,914,703,663.38
  5. Step 5: Solve for x
    x = 1,408,914,703,663.38/1,318,279.85
  6. Step 6: Final answer
    x = 1,068,752.37

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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.