Home / 990,739.81-1,485,641.31-383,812.39

Finding the Fourth Proportional to 990,739.81, 1,485,641.31 and 383,812.39

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Solution

The fourth proportional to 990,739.81, 1,485,641.31 and 383,812.39 is: 575,537.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,739.81 : 1,485,641.31 = 383,812.39 : x
  2. Step 2: Convert to fraction form
    990,739.81/1,485,641.31 = 383,812.39/x
  3. Step 3: Cross multiply
    990,739.81x = 1,485,641.31 × 383,812.39
  4. Step 4: Simplify right side
    990,739.81x = 570,207,541,873.83
  5. Step 5: Solve for x
    x = 570,207,541,873.83/990,739.81
  6. Step 6: Final answer
    x = 575,537.13

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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.