Home / 1,422,981.66-1,963,761.53-778,387.11

Finding the Fourth Proportional to 1,422,981.66, 1,963,761.53 and 778,387.11

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Solution

The fourth proportional to 1,422,981.66, 1,963,761.53 and 778,387.11 is: 1,074,199.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,981.66 : 1,963,761.53 = 778,387.11 : x
  2. Step 2: Convert to fraction form
    1,422,981.66/1,963,761.53 = 778,387.11/x
  3. Step 3: Cross multiply
    1,422,981.66x = 1,963,761.53 × 778,387.11
  4. Step 4: Simplify right side
    1,422,981.66x = 1,528,566,662,065.88
  5. Step 5: Solve for x
    x = 1,528,566,662,065.88/1,422,981.66
  6. Step 6: Final answer
    x = 1,074,199.83

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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.