Home / 831,676.48-1,147,431.63-678,449.79

Finding the Fourth Proportional to 831,676.48, 1,147,431.63 and 678,449.79

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Solution

The fourth proportional to 831,676.48, 1,147,431.63 and 678,449.79 is: 936,030.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,676.48 : 1,147,431.63 = 678,449.79 : x
  2. Step 2: Convert to fraction form
    831,676.48/1,147,431.63 = 678,449.79/x
  3. Step 3: Cross multiply
    831,676.48x = 1,147,431.63 × 678,449.79
  4. Step 4: Simplify right side
    831,676.48x = 778,474,748,412.86
  5. Step 5: Solve for x
    x = 778,474,748,412.86/831,676.48
  6. Step 6: Final answer
    x = 936,030.74

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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.