Home / 1,425,345.36-1,966,906.71-780,768.42

Finding the Fourth Proportional to 1,425,345.36, 1,966,906.71 and 780,768.42

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Solution

The fourth proportional to 1,425,345.36, 1,966,906.71 and 780,768.42 is: 1,077,422.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,345.36 : 1,966,906.71 = 780,768.42 : x
  2. Step 2: Convert to fraction form
    1,425,345.36/1,966,906.71 = 780,768.42/x
  3. Step 3: Cross multiply
    1,425,345.36x = 1,966,906.71 × 780,768.42
  4. Step 4: Simplify right side
    1,425,345.36x = 1,535,698,644,254.10
  5. Step 5: Solve for x
    x = 1,535,698,644,254.10/1,425,345.36
  6. Step 6: Final answer
    x = 1,077,422.14

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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.