Home / 646,185.84-969,434.28-272,315.76

Finding the Fourth Proportional to 646,185.84, 969,434.28 and 272,315.76

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Solution

The fourth proportional to 646,185.84, 969,434.28 and 272,315.76 is: 408,539.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,185.84 : 969,434.28 = 272,315.76 : x
  2. Step 2: Convert to fraction form
    646,185.84/969,434.28 = 272,315.76/x
  3. Step 3: Cross multiply
    646,185.84x = 969,434.28 × 272,315.76
  4. Step 4: Simplify right side
    646,185.84x = 263,992,232,728.25
  5. Step 5: Solve for x
    x = 263,992,232,728.25/646,185.84
  6. Step 6: Final answer
    x = 408,539.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.