Home / 1,289,290.72-1,934,286-390,696.16

Finding the Fourth Proportional to 1,289,290.72, 1,934,286 and 390,696.16

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Solution

The fourth proportional to 1,289,290.72, 1,934,286 and 390,696.16 is: 586,150.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,290.72 : 1,934,286 = 390,696.16 : x
  2. Step 2: Convert to fraction form
    1,289,290.72/1,934,286 = 390,696.16/x
  3. Step 3: Cross multiply
    1,289,290.72x = 1,934,286 × 390,696.16
  4. Step 4: Simplify right side
    1,289,290.72x = 755,718,112,541.76
  5. Step 5: Solve for x
    x = 755,718,112,541.76/1,289,290.72
  6. Step 6: Final answer
    x = 586,150.28

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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.