Home / 1,275,809.80-1,913,714.70-1,072,856.20

Finding the Fourth Proportional to 1,275,809.80, 1,913,714.70 and 1,072,856.20

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Solution

The fourth proportional to 1,275,809.80, 1,913,714.70 and 1,072,856.20 is: 1,609,284.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,809.80 : 1,913,714.70 = 1,072,856.20 : x
  2. Step 2: Convert to fraction form
    1,275,809.80/1,913,714.70 = 1,072,856.20/x
  3. Step 3: Cross multiply
    1,275,809.80x = 1,913,714.70 × 1,072,856.20
  4. Step 4: Simplify right side
    1,275,809.80x = 2,053,140,680,926.14
  5. Step 5: Solve for x
    x = 2,053,140,680,926.14/1,275,809.80
  6. Step 6: Final answer
    x = 1,609,284.30

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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.