Home / 1,386,289.83-1,915,710.54-1,000,371.81

Finding the Fourth Proportional to 1,386,289.83, 1,915,710.54 and 1,000,371.81

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Solution

The fourth proportional to 1,386,289.83, 1,915,710.54 and 1,000,371.81 is: 1,382,411.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,289.83 : 1,915,710.54 = 1,000,371.81 : x
  2. Step 2: Convert to fraction form
    1,386,289.83/1,915,710.54 = 1,000,371.81/x
  3. Step 3: Cross multiply
    1,386,289.83x = 1,915,710.54 × 1,000,371.81
  4. Step 4: Simplify right side
    1,386,289.83x = 1,916,422,820,335.88
  5. Step 5: Solve for x
    x = 1,916,422,820,335.88/1,386,289.83
  6. Step 6: Final answer
    x = 1,382,411.37

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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.