Home / 1,089,036.80-1,634,138.40-490,090.40

Finding the Fourth Proportional to 1,089,036.80, 1,634,138.40 and 490,090.40

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Solution

The fourth proportional to 1,089,036.80, 1,634,138.40 and 490,090.40 is: 735,398.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089,036.80 : 1,634,138.40 = 490,090.40 : x
  2. Step 2: Convert to fraction form
    1,089,036.80/1,634,138.40 = 490,090.40/x
  3. Step 3: Cross multiply
    1,089,036.80x = 1,634,138.40 × 490,090.40
  4. Step 4: Simplify right side
    1,089,036.80x = 800,875,542,111.36
  5. Step 5: Solve for x
    x = 800,875,542,111.36/1,089,036.80
  6. Step 6: Final answer
    x = 735,398.05

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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.