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Finding the Fourth Proportional to 1,556,352, 2,147,765.76 and 840,960

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Solution

The fourth proportional to 1,556,352, 2,147,765.76 and 840,960 is: 1,160,524.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556,352 : 2,147,765.76 = 840,960 : x
  2. Step 2: Convert to fraction form
    1,556,352/2,147,765.76 = 840,960/x
  3. Step 3: Cross multiply
    1,556,352x = 2,147,765.76 × 840,960
  4. Step 4: Simplify right side
    1,556,352x = 1,806,185,093,529.60
  5. Step 5: Solve for x
    x = 1,806,185,093,529.60/1,556,352
  6. Step 6: Final answer
    x = 1,160,524.80

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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.