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Finding the Fourth Proportional to 1,790,439, 2,470,805.82 and 985,623

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Solution

The fourth proportional to 1,790,439, 2,470,805.82 and 985,623 is: 1,360,159.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790,439 : 2,470,805.82 = 985,623 : x
  2. Step 2: Convert to fraction form
    1,790,439/2,470,805.82 = 985,623/x
  3. Step 3: Cross multiply
    1,790,439x = 2,470,805.82 × 985,623
  4. Step 4: Simplify right side
    1,790,439x = 2,435,283,044,725.86
  5. Step 5: Solve for x
    x = 2,435,283,044,725.86/1,790,439
  6. Step 6: Final answer
    x = 1,360,159.74

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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.