Home / 1,187,209.39-1,638,271.23-757,443.39

Finding the Fourth Proportional to 1,187,209.39, 1,638,271.23 and 757,443.39

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Solution

The fourth proportional to 1,187,209.39, 1,638,271.23 and 757,443.39 is: 1,045,222.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,209.39 : 1,638,271.23 = 757,443.39 : x
  2. Step 2: Convert to fraction form
    1,187,209.39/1,638,271.23 = 757,443.39/x
  3. Step 3: Cross multiply
    1,187,209.39x = 1,638,271.23 × 757,443.39
  4. Step 4: Simplify right side
    1,187,209.39x = 1,240,897,714,190.67
  5. Step 5: Solve for x
    x = 1,240,897,714,190.67/1,187,209.39
  6. Step 6: Final answer
    x = 1,045,222.29

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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.