Home / 1,188,319.74-1,639,870.08-644,467.53

Finding the Fourth Proportional to 1,188,319.74, 1,639,870.08 and 644,467.53

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Solution

The fourth proportional to 1,188,319.74, 1,639,870.08 and 644,467.53 is: 889,359.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,319.74 : 1,639,870.08 = 644,467.53 : x
  2. Step 2: Convert to fraction form
    1,188,319.74/1,639,870.08 = 644,467.53/x
  3. Step 3: Cross multiply
    1,188,319.74x = 1,639,870.08 × 644,467.53
  4. Step 4: Simplify right side
    1,188,319.74x = 1,056,843,019,978.50
  5. Step 5: Solve for x
    x = 1,056,843,019,978.50/1,188,319.74
  6. Step 6: Final answer
    x = 889,359.14

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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.