Home / 1,287,068.96-1,930,655.28-612,803.36

Finding the Fourth Proportional to 1,287,068.96, 1,930,655.28 and 612,803.36

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Solution

The fourth proportional to 1,287,068.96, 1,930,655.28 and 612,803.36 is: 919,229.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,068.96 : 1,930,655.28 = 612,803.36 : x
  2. Step 2: Convert to fraction form
    1,287,068.96/1,930,655.28 = 612,803.36/x
  3. Step 3: Cross multiply
    1,287,068.96x = 1,930,655.28 × 612,803.36
  4. Step 4: Simplify right side
    1,287,068.96x = 1,183,112,042,585.74
  5. Step 5: Solve for x
    x = 1,183,112,042,585.74/1,287,068.96
  6. Step 6: Final answer
    x = 919,229.72

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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.