Home / 1,216,350.12-1,678,558.96-679,806.12

Finding the Fourth Proportional to 1,216,350.12, 1,678,558.96 and 679,806.12

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Solution

The fourth proportional to 1,216,350.12, 1,678,558.96 and 679,806.12 is: 938,130.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,350.12 : 1,678,558.96 = 679,806.12 : x
  2. Step 2: Convert to fraction form
    1,216,350.12/1,678,558.96 = 679,806.12/x
  3. Step 3: Cross multiply
    1,216,350.12x = 1,678,558.96 × 679,806.12
  4. Step 4: Simplify right side
    1,216,350.12x = 1,141,094,653,788.84
  5. Step 5: Solve for x
    x = 1,141,094,653,788.84/1,216,350.12
  6. Step 6: Final answer
    x = 938,130.10

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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.