Home / 1,218,715.81-1,681,826.75-674,851.57

Finding the Fourth Proportional to 1,218,715.81, 1,681,826.75 and 674,851.57

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Solution

The fourth proportional to 1,218,715.81, 1,681,826.75 and 674,851.57 is: 931,294.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,715.81 : 1,681,826.75 = 674,851.57 : x
  2. Step 2: Convert to fraction form
    1,218,715.81/1,681,826.75 = 674,851.57/x
  3. Step 3: Cross multiply
    1,218,715.81x = 1,681,826.75 × 674,851.57
  4. Step 4: Simplify right side
    1,218,715.81x = 1,134,983,422,705.50
  5. Step 5: Solve for x
    x = 1,134,983,422,705.50/1,218,715.81
  6. Step 6: Final answer
    x = 931,294.58

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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.