Home / 1,718,478.80-2,578,639.80-721,307.60

Finding the Fourth Proportional to 1,718,478.80, 2,578,639.80 and 721,307.60

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Solution

The fourth proportional to 1,718,478.80, 2,578,639.80 and 721,307.60 is: 1,082,348.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,718,478.80 : 2,578,639.80 = 721,307.60 : x
  2. Step 2: Convert to fraction form
    1,718,478.80/2,578,639.80 = 721,307.60/x
  3. Step 3: Cross multiply
    1,718,478.80x = 2,578,639.80 × 721,307.60
  4. Step 4: Simplify right side
    1,718,478.80x = 1,859,992,485,402.48
  5. Step 5: Solve for x
    x = 1,859,992,485,402.48/1,718,478.80
  6. Step 6: Final answer
    x = 1,082,348.23

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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.