Home / 674,989.30-931,570.92-384,705.21

Finding the Fourth Proportional to 674,989.30, 931,570.92 and 384,705.21

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Solution

The fourth proportional to 674,989.30, 931,570.92 and 384,705.21 is: 530,942.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,989.30 : 931,570.92 = 384,705.21 : x
  2. Step 2: Convert to fraction form
    674,989.30/931,570.92 = 384,705.21/x
  3. Step 3: Cross multiply
    674,989.30x = 931,570.92 × 384,705.21
  4. Step 4: Simplify right side
    674,989.30x = 358,380,186,408.49
  5. Step 5: Solve for x
    x = 358,380,186,408.49/674,989.30
  6. Step 6: Final answer
    x = 530,942.03

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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.