Home / 1,422,805.86-1,963,487.32-778,212.20

Finding the Fourth Proportional to 1,422,805.86, 1,963,487.32 and 778,212.20

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Solution

The fourth proportional to 1,422,805.86, 1,963,487.32 and 778,212.20 is: 1,073,941.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,805.86 : 1,963,487.32 = 778,212.20 : x
  2. Step 2: Convert to fraction form
    1,422,805.86/1,963,487.32 = 778,212.20/x
  3. Step 3: Cross multiply
    1,422,805.86x = 1,963,487.32 × 778,212.20
  4. Step 4: Simplify right side
    1,422,805.86x = 1,528,009,786,969.30
  5. Step 5: Solve for x
    x = 1,528,009,786,969.30/1,422,805.86
  6. Step 6: Final answer
    x = 1,073,941.17

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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.