Home / 999,643.04-1,378,072.55-712,664.90

Finding the Fourth Proportional to 999,643.04, 1,378,072.55 and 712,664.90

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Solution

The fourth proportional to 999,643.04, 1,378,072.55 and 712,664.90 is: 982,454.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,643.04 : 1,378,072.55 = 712,664.90 : x
  2. Step 2: Convert to fraction form
    999,643.04/1,378,072.55 = 712,664.90/x
  3. Step 3: Cross multiply
    999,643.04x = 1,378,072.55 × 712,664.90
  4. Step 4: Simplify right side
    999,643.04x = 982,103,925,584.81
  5. Step 5: Solve for x
    x = 982,103,925,584.81/999,643.04
  6. Step 6: Final answer
    x = 982,454.63

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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.