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Finding the Fourth Proportional to 1,422,889.05, 1,964,248.62 and 841,929.51

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Solution

The fourth proportional to 1,422,889.05, 1,964,248.62 and 841,929.51 is: 1,162,254.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,889.05 : 1,964,248.62 = 841,929.51 : x
  2. Step 2: Convert to fraction form
    1,422,889.05/1,964,248.62 = 841,929.51/x
  3. Step 3: Cross multiply
    1,422,889.05x = 1,964,248.62 × 841,929.51
  4. Step 4: Simplify right side
    1,422,889.05x = 1,653,758,878,154.78
  5. Step 5: Solve for x
    x = 1,653,758,878,154.78/1,422,889.05
  6. Step 6: Final answer
    x = 1,162,254.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.