Home / 789,106.86-1,089,329.85-462,374.46

Finding the Fourth Proportional to 789,106.86, 1,089,329.85 and 462,374.46

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Solution

The fourth proportional to 789,106.86, 1,089,329.85 and 462,374.46 is: 638,289.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,106.86 : 1,089,329.85 = 462,374.46 : x
  2. Step 2: Convert to fraction form
    789,106.86/1,089,329.85 = 462,374.46/x
  3. Step 3: Cross multiply
    789,106.86x = 1,089,329.85 × 462,374.46
  4. Step 4: Simplify right side
    789,106.86x = 503,678,301,155.63
  5. Step 5: Solve for x
    x = 503,678,301,155.63/789,106.86
  6. Step 6: Final answer
    x = 638,289.09

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1.5x scale

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.