Home / 789,607.08-1,089,654.60-427,031.31

Finding the Fourth Proportional to 789,607.08, 1,089,654.60 and 427,031.31

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Solution

The fourth proportional to 789,607.08, 1,089,654.60 and 427,031.31 is: 589,301.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,607.08 : 1,089,654.60 = 427,031.31 : x
  2. Step 2: Convert to fraction form
    789,607.08/1,089,654.60 = 427,031.31/x
  3. Step 3: Cross multiply
    789,607.08x = 1,089,654.60 × 427,031.31
  4. Step 4: Simplify right side
    789,607.08x = 465,316,631,285.53
  5. Step 5: Solve for x
    x = 465,316,631,285.53/789,607.08
  6. Step 6: Final answer
    x = 589,301.49

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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.