Home / 1,432,478.49-1,976,821.32-787,947.72

Finding the Fourth Proportional to 1,432,478.49, 1,976,821.32 and 787,947.72

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Solution

The fourth proportional to 1,432,478.49, 1,976,821.32 and 787,947.72 is: 1,087,368.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,478.49 : 1,976,821.32 = 787,947.72 : x
  2. Step 2: Convert to fraction form
    1,432,478.49/1,976,821.32 = 787,947.72/x
  3. Step 3: Cross multiply
    1,432,478.49x = 1,976,821.32 × 787,947.72
  4. Step 4: Simplify right side
    1,432,478.49x = 1,557,631,851,941.39
  5. Step 5: Solve for x
    x = 1,557,631,851,941.39/1,432,478.49
  6. Step 6: Final answer
    x = 1,087,368.41

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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.