Home / 2,154,130.45-2,972,718.12-1,187,263.21

Finding the Fourth Proportional to 2,154,130.45, 2,972,718.12 and 1,187,263.21

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Solution

The fourth proportional to 2,154,130.45, 2,972,718.12 and 1,187,263.21 is: 1,638,433.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154,130.45 : 2,972,718.12 = 1,187,263.21 : x
  2. Step 2: Convert to fraction form
    2,154,130.45/2,972,718.12 = 1,187,263.21/x
  3. Step 3: Cross multiply
    2,154,130.45x = 2,972,718.12 × 1,187,263.21
  4. Step 4: Simplify right side
    2,154,130.45x = 3,529,398,857,576.37
  5. Step 5: Solve for x
    x = 3,529,398,857,576.37/2,154,130.45
  6. Step 6: Final answer
    x = 1,638,433.21

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Double scale
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1.5x scale

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.