Home / 789,688.74-1,089,770.64-445,597.72

Finding the Fourth Proportional to 789,688.74, 1,089,770.64 and 445,597.72

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Solution

The fourth proportional to 789,688.74, 1,089,770.64 and 445,597.72 is: 614,924.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,688.74 : 1,089,770.64 = 445,597.72 : x
  2. Step 2: Convert to fraction form
    789,688.74/1,089,770.64 = 445,597.72/x
  3. Step 3: Cross multiply
    789,688.74x = 1,089,770.64 × 445,597.72
  4. Step 4: Simplify right side
    789,688.74x = 485,599,312,506.94
  5. Step 5: Solve for x
    x = 485,599,312,506.94/789,688.74
  6. Step 6: Final answer
    x = 614,924.95

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Double scale
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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.