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Finding the Fourth Proportional to 1,207,059.40, 1,807,964.70 and 732,917.80

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Solution

The fourth proportional to 1,207,059.40, 1,807,964.70 and 732,917.80 is: 1,097,783.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,059.40 : 1,807,964.70 = 732,917.80 : x
  2. Step 2: Convert to fraction form
    1,207,059.40/1,807,964.70 = 732,917.80/x
  3. Step 3: Cross multiply
    1,207,059.40x = 1,807,964.70 × 732,917.80
  4. Step 4: Simplify right side
    1,207,059.40x = 1,325,089,510,401.66
  5. Step 5: Solve for x
    x = 1,325,089,510,401.66/1,207,059.40
  6. Step 6: Final answer
    x = 1,097,783.18

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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.