Home / 1,692,428.85-2,539,855.36-720,474.57

Finding the Fourth Proportional to 1,692,428.85, 2,539,855.36 and 720,474.57

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Solution

The fourth proportional to 1,692,428.85, 2,539,855.36 and 720,474.57 is: 1,081,227.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692,428.85 : 2,539,855.36 = 720,474.57 : x
  2. Step 2: Convert to fraction form
    1,692,428.85/2,539,855.36 = 720,474.57/x
  3. Step 3: Cross multiply
    1,692,428.85x = 2,539,855.36 × 720,474.57
  4. Step 4: Simplify right side
    1,692,428.85x = 1,829,901,210,746.57
  5. Step 5: Solve for x
    x = 1,829,901,210,746.57/1,692,428.85
  6. Step 6: Final answer
    x = 1,081,227.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.