Home / 1,289,805.39-1,934,492.07-391,032.21

Finding the Fourth Proportional to 1,289,805.39, 1,934,492.07 and 391,032.21

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Solution

The fourth proportional to 1,289,805.39, 1,934,492.07 and 391,032.21 is: 586,482.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,805.39 : 1,934,492.07 = 391,032.21 : x
  2. Step 2: Convert to fraction form
    1,289,805.39/1,934,492.07 = 391,032.21/x
  3. Step 3: Cross multiply
    1,289,805.39x = 1,934,492.07 × 391,032.21
  4. Step 4: Simplify right side
    1,289,805.39x = 756,448,709,359.58
  5. Step 5: Solve for x
    x = 756,448,709,359.58/1,289,805.39
  6. Step 6: Final answer
    x = 586,482.83

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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.