Home / 1,243,436.64-1,862,714.28-644,789.16

Finding the Fourth Proportional to 1,243,436.64, 1,862,714.28 and 644,789.16

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Solution

The fourth proportional to 1,243,436.64, 1,862,714.28 and 644,789.16 is: 965,918.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,436.64 : 1,862,714.28 = 644,789.16 : x
  2. Step 2: Convert to fraction form
    1,243,436.64/1,862,714.28 = 644,789.16/x
  3. Step 3: Cross multiply
    1,243,436.64x = 1,862,714.28 × 644,789.16
  4. Step 4: Simplify right side
    1,243,436.64x = 1,201,057,975,921.20
  5. Step 5: Solve for x
    x = 1,201,057,975,921.20/1,243,436.64
  6. Step 6: Final answer
    x = 965,918.12

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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.