Home / 678,742.10-936,638.43-376,955.54

Finding the Fourth Proportional to 678,742.10, 936,638.43 and 376,955.54

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Solution

The fourth proportional to 678,742.10, 936,638.43 and 376,955.54 is: 520,184.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,742.10 : 936,638.43 = 376,955.54 : x
  2. Step 2: Convert to fraction form
    678,742.10/936,638.43 = 376,955.54/x
  3. Step 3: Cross multiply
    678,742.10x = 936,638.43 × 376,955.54
  4. Step 4: Simplify right side
    678,742.10x = 353,071,045,165.40
  5. Step 5: Solve for x
    x = 353,071,045,165.40/678,742.10
  6. Step 6: Final answer
    x = 520,184.39

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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.