Home / 691,182.75-953,881.16-389,376.75

Finding the Fourth Proportional to 691,182.75, 953,881.16 and 389,376.75

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Solution

The fourth proportional to 691,182.75, 953,881.16 and 389,376.75 is: 537,367.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,182.75 : 953,881.16 = 389,376.75 : x
  2. Step 2: Convert to fraction form
    691,182.75/953,881.16 = 389,376.75/x
  3. Step 3: Cross multiply
    691,182.75x = 953,881.16 × 389,376.75
  4. Step 4: Simplify right side
    691,182.75x = 371,419,144,020.15
  5. Step 5: Solve for x
    x = 371,419,144,020.15/691,182.75
  6. Step 6: Final answer
    x = 537,367.50

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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.