Home / 1,490,466.80-2,056,811.64-870,378.50

Finding the Fourth Proportional to 1,490,466.80, 2,056,811.64 and 870,378.50

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Solution

The fourth proportional to 1,490,466.80, 2,056,811.64 and 870,378.50 is: 1,201,103.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,466.80 : 2,056,811.64 = 870,378.50 : x
  2. Step 2: Convert to fraction form
    1,490,466.80/2,056,811.64 = 870,378.50/x
  3. Step 3: Cross multiply
    1,490,466.80x = 2,056,811.64 × 870,378.50
  4. Step 4: Simplify right side
    1,490,466.80x = 1,790,204,630,005.74
  5. Step 5: Solve for x
    x = 1,790,204,630,005.74/1,490,466.80
  6. Step 6: Final answer
    x = 1,201,103.33

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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.