Home / 1,187,068.95-1,638,185.64-728,436.93

Finding the Fourth Proportional to 1,187,068.95, 1,638,185.64 and 728,436.93

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Solution

The fourth proportional to 1,187,068.95, 1,638,185.64 and 728,436.93 is: 1,005,261.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,068.95 : 1,638,185.64 = 728,436.93 : x
  2. Step 2: Convert to fraction form
    1,187,068.95/1,638,185.64 = 728,436.93/x
  3. Step 3: Cross multiply
    1,187,068.95x = 1,638,185.64 × 728,436.93
  4. Step 4: Simplify right side
    1,187,068.95x = 1,193,314,918,371.69
  5. Step 5: Solve for x
    x = 1,193,314,918,371.69/1,187,068.95
  6. Step 6: Final answer
    x = 1,005,261.67

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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.