Home / 1,556,172.50-2,147,518.05-840,780.50

Finding the Fourth Proportional to 1,556,172.50, 2,147,518.05 and 840,780.50

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Solution

The fourth proportional to 1,556,172.50, 2,147,518.05 and 840,780.50 is: 1,160,277.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556,172.50 : 2,147,518.05 = 840,780.50 : x
  2. Step 2: Convert to fraction form
    1,556,172.50/2,147,518.05 = 840,780.50/x
  3. Step 3: Cross multiply
    1,556,172.50x = 2,147,518.05 × 840,780.50
  4. Step 4: Simplify right side
    1,556,172.50x = 1,805,591,299,838.03
  5. Step 5: Solve for x
    x = 1,805,591,299,838.03/1,556,172.50
  6. Step 6: Final answer
    x = 1,160,277.09

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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.