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Finding the Fourth Proportional to 1,555,603, 2,146,733.58 and 840,211

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Solution

The fourth proportional to 1,555,603, 2,146,733.58 and 840,211 is: 1,159,491.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555,603 : 2,146,733.58 = 840,211 : x
  2. Step 2: Convert to fraction form
    1,555,603/2,146,733.58 = 840,211/x
  3. Step 3: Cross multiply
    1,555,603x = 2,146,733.58 × 840,211
  4. Step 4: Simplify right side
    1,555,603x = 1,803,709,167,985.38
  5. Step 5: Solve for x
    x = 1,803,709,167,985.38/1,555,603
  6. Step 6: Final answer
    x = 1,159,491.96

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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.