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Finding the Fourth Proportional to 1,369,712, 1,890,209.04 and 766,100

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Solution

The fourth proportional to 1,369,712, 1,890,209.04 and 766,100 is: 1,057,221.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369,712 : 1,890,209.04 = 766,100 : x
  2. Step 2: Convert to fraction form
    1,369,712/1,890,209.04 = 766,100/x
  3. Step 3: Cross multiply
    1,369,712x = 1,890,209.04 × 766,100
  4. Step 4: Simplify right side
    1,369,712x = 1,448,089,145,544
  5. Step 5: Solve for x
    x = 1,448,089,145,544/1,369,712
  6. Step 6: Final answer
    x = 1,057,221.62

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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.