Home / 1,229,690.94-1,696,931.41-678,428.43

Finding the Fourth Proportional to 1,229,690.94, 1,696,931.41 and 678,428.43

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Solution

The fourth proportional to 1,229,690.94, 1,696,931.41 and 678,428.43 is: 936,208.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229,690.94 : 1,696,931.41 = 678,428.43 : x
  2. Step 2: Convert to fraction form
    1,229,690.94/1,696,931.41 = 678,428.43/x
  3. Step 3: Cross multiply
    1,229,690.94x = 1,696,931.41 × 678,428.43
  4. Step 4: Simplify right side
    1,229,690.94x = 1,151,246,512,303.99
  5. Step 5: Solve for x
    x = 1,151,246,512,303.99/1,229,690.94
  6. Step 6: Final answer
    x = 936,208.01

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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.