Home / 911,908.28-1,257,780.76-640,036.84

Finding the Fourth Proportional to 911,908.28, 1,257,780.76 and 640,036.84

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Solution

The fourth proportional to 911,908.28, 1,257,780.76 and 640,036.84 is: 882,792.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,908.28 : 1,257,780.76 = 640,036.84 : x
  2. Step 2: Convert to fraction form
    911,908.28/1,257,780.76 = 640,036.84/x
  3. Step 3: Cross multiply
    911,908.28x = 1,257,780.76 × 640,036.84
  4. Step 4: Simplify right side
    911,908.28x = 805,026,023,043.20
  5. Step 5: Solve for x
    x = 805,026,023,043.20/911,908.28
  6. Step 6: Final answer
    x = 882,792.76

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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.