Home / 1,398,511.28-1,929,399-786,523.68

Finding the Fourth Proportional to 1,398,511.28, 1,929,399 and 786,523.68

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Solution

The fourth proportional to 1,398,511.28, 1,929,399 and 786,523.68 is: 1,085,095.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,511.28 : 1,929,399 = 786,523.68 : x
  2. Step 2: Convert to fraction form
    1,398,511.28/1,929,399 = 786,523.68/x
  3. Step 3: Cross multiply
    1,398,511.28x = 1,929,399 × 786,523.68
  4. Step 4: Simplify right side
    1,398,511.28x = 1,517,518,001,668.32
  5. Step 5: Solve for x
    x = 1,517,518,001,668.32/1,398,511.28
  6. Step 6: Final answer
    x = 1,085,095.29

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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.