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Finding the Fourth Proportional to 1,432,326, 1,976,622.88 and 778,958

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Solution

The fourth proportional to 1,432,326, 1,976,622.88 and 778,958 is: 1,074,969.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,326 : 1,976,622.88 = 778,958 : x
  2. Step 2: Convert to fraction form
    1,432,326/1,976,622.88 = 778,958/x
  3. Step 3: Cross multiply
    1,432,326x = 1,976,622.88 × 778,958
  4. Step 4: Simplify right side
    1,432,326x = 1,539,706,205,359.04
  5. Step 5: Solve for x
    x = 1,539,706,205,359.04/1,432,326
  6. Step 6: Final answer
    x = 1,074,969.11

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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.