Home / 1,422,980.66-1,963,760.15-778,386.11

Finding the Fourth Proportional to 1,422,980.66, 1,963,760.15 and 778,386.11

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Solution

The fourth proportional to 1,422,980.66, 1,963,760.15 and 778,386.11 is: 1,074,198.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,980.66 : 1,963,760.15 = 778,386.11 : x
  2. Step 2: Convert to fraction form
    1,422,980.66/1,963,760.15 = 778,386.11/x
  3. Step 3: Cross multiply
    1,422,980.66x = 1,963,760.15 × 778,386.11
  4. Step 4: Simplify right side
    1,422,980.66x = 1,528,563,616,258.68
  5. Step 5: Solve for x
    x = 1,528,563,616,258.68/1,422,980.66
  6. Step 6: Final answer
    x = 1,074,198.45

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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.