Home / 1,434,351.78-1,979,410.14-780,985.53

Finding the Fourth Proportional to 1,434,351.78, 1,979,410.14 and 780,985.53

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Solution

The fourth proportional to 1,434,351.78, 1,979,410.14 and 780,985.53 is: 1,077,762.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,351.78 : 1,979,410.14 = 780,985.53 : x
  2. Step 2: Convert to fraction form
    1,434,351.78/1,979,410.14 = 780,985.53/x
  3. Step 3: Cross multiply
    1,434,351.78x = 1,979,410.14 × 780,985.53
  4. Step 4: Simplify right side
    1,434,351.78x = 1,545,890,677,275.27
  5. Step 5: Solve for x
    x = 1,545,890,677,275.27/1,434,351.78
  6. Step 6: Final answer
    x = 1,077,762.58

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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.