Home / 1,555,117.16-2,145,801.69-866,638.16

Finding the Fourth Proportional to 1,555,117.16, 2,145,801.69 and 866,638.16

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Solution

The fourth proportional to 1,555,117.16, 2,145,801.69 and 866,638.16 is: 1,195,815.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555,117.16 : 2,145,801.69 = 866,638.16 : x
  2. Step 2: Convert to fraction form
    1,555,117.16/2,145,801.69 = 866,638.16/x
  3. Step 3: Cross multiply
    1,555,117.16x = 2,145,801.69 × 866,638.16
  4. Step 4: Simplify right side
    1,555,117.16x = 1,859,633,617,617.48
  5. Step 5: Solve for x
    x = 1,859,633,617,617.48/1,555,117.16
  6. Step 6: Final answer
    x = 1,195,815.77

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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.