Home / 1,289,403.83-1,934,120.33-390,838.43

Finding the Fourth Proportional to 1,289,403.83, 1,934,120.33 and 390,838.43

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Solution

The fourth proportional to 1,289,403.83, 1,934,120.33 and 390,838.43 is: 586,262.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,403.83 : 1,934,120.33 = 390,838.43 : x
  2. Step 2: Convert to fraction form
    1,289,403.83/1,934,120.33 = 390,838.43/x
  3. Step 3: Cross multiply
    1,289,403.83x = 1,934,120.33 × 390,838.43
  4. Step 4: Simplify right side
    1,289,403.83x = 755,928,553,208.28
  5. Step 5: Solve for x
    x = 755,928,553,208.28/1,289,403.83
  6. Step 6: Final answer
    x = 586,262.07

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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.