Home / 1,216,386.69-1,678,584.05-672,508.47

Finding the Fourth Proportional to 1,216,386.69, 1,678,584.05 and 672,508.47

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Solution

The fourth proportional to 1,216,386.69, 1,678,584.05 and 672,508.47 is: 928,045.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,386.69 : 1,678,584.05 = 672,508.47 : x
  2. Step 2: Convert to fraction form
    1,216,386.69/1,678,584.05 = 672,508.47/x
  3. Step 3: Cross multiply
    1,216,386.69x = 1,678,584.05 × 672,508.47
  4. Step 4: Simplify right side
    1,216,386.69x = 1,128,861,987,869.36
  5. Step 5: Solve for x
    x = 1,128,861,987,869.36/1,216,386.69
  6. Step 6: Final answer
    x = 928,045.33

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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.