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Finding the Fourth Proportional to 1,089,972, 1,635,220.62 and 342,018

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Solution

The fourth proportional to 1,089,972, 1,635,220.62 and 342,018 is: 513,109.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089,972 : 1,635,220.62 = 342,018 : x
  2. Step 2: Convert to fraction form
    1,089,972/1,635,220.62 = 342,018/x
  3. Step 3: Cross multiply
    1,089,972x = 1,635,220.62 × 342,018
  4. Step 4: Simplify right side
    1,089,972x = 559,274,886,011.16
  5. Step 5: Solve for x
    x = 559,274,886,011.16/1,089,972
  6. Step 6: Final answer
    x = 513,109.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.