Home / 1,355,364.90-1,870,386.12-774,581.49

Finding the Fourth Proportional to 1,355,364.90, 1,870,386.12 and 774,581.49

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Solution

The fourth proportional to 1,355,364.90, 1,870,386.12 and 774,581.49 is: 1,068,912.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,364.90 : 1,870,386.12 = 774,581.49 : x
  2. Step 2: Convert to fraction form
    1,355,364.90/1,870,386.12 = 774,581.49/x
  3. Step 3: Cross multiply
    1,355,364.90x = 1,870,386.12 × 774,581.49
  4. Step 4: Simplify right side
    1,355,364.90x = 1,448,766,467,704.92
  5. Step 5: Solve for x
    x = 1,448,766,467,704.92/1,355,364.90
  6. Step 6: Final answer
    x = 1,068,912.49

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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.