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Finding the Fourth Proportional to 1,555,444, 2,146,512.72 and 840,052

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Solution

The fourth proportional to 1,555,444, 2,146,512.72 and 840,052 is: 1,159,271.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555,444 : 2,146,512.72 = 840,052 : x
  2. Step 2: Convert to fraction form
    1,555,444/2,146,512.72 = 840,052/x
  3. Step 3: Cross multiply
    1,555,444x = 2,146,512.72 × 840,052
  4. Step 4: Simplify right side
    1,555,444x = 1,803,182,303,461.44
  5. Step 5: Solve for x
    x = 1,803,182,303,461.44/1,555,444
  6. Step 6: Final answer
    x = 1,159,271.76

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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.