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Finding the Fourth Proportional to 1,275,800.63, 1,913,705.19 and 875,227.28

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Solution

The fourth proportional to 1,275,800.63, 1,913,705.19 and 875,227.28 is: 1,312,843.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,800.63 : 1,913,705.19 = 875,227.28 : x
  2. Step 2: Convert to fraction form
    1,275,800.63/1,913,705.19 = 875,227.28/x
  3. Step 3: Cross multiply
    1,275,800.63x = 1,913,705.19 × 875,227.28
  4. Step 4: Simplify right side
    1,275,800.63x = 1,674,926,978,597.06
  5. Step 5: Solve for x
    x = 1,674,926,978,597.06/1,275,800.63
  6. Step 6: Final answer
    x = 1,312,843.83

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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.