Home / 979,111.60-1,351,184.89-543,558.40

Finding the Fourth Proportional to 979,111.60, 1,351,184.89 and 543,558.40

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Solution

The fourth proportional to 979,111.60, 1,351,184.89 and 543,558.40 is: 750,116.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,111.60 : 1,351,184.89 = 543,558.40 : x
  2. Step 2: Convert to fraction form
    979,111.60/1,351,184.89 = 543,558.40/x
  3. Step 3: Cross multiply
    979,111.60x = 1,351,184.89 × 543,558.40
  4. Step 4: Simplify right side
    979,111.60x = 734,447,888,797.76
  5. Step 5: Solve for x
    x = 734,447,888,797.76/979,111.60
  6. Step 6: Final answer
    x = 750,116.63

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Double scale
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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.