Home / 1,291,904.36-1,937,118.08-393,080.30

Finding the Fourth Proportional to 1,291,904.36, 1,937,118.08 and 393,080.30

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Solution

The fourth proportional to 1,291,904.36, 1,937,118.08 and 393,080.30 is: 589,395.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,904.36 : 1,937,118.08 = 393,080.30 : x
  2. Step 2: Convert to fraction form
    1,291,904.36/1,937,118.08 = 393,080.30/x
  3. Step 3: Cross multiply
    1,291,904.36x = 1,937,118.08 × 393,080.30
  4. Step 4: Simplify right side
    1,291,904.36x = 761,442,956,021.82
  5. Step 5: Solve for x
    x = 761,442,956,021.82/1,291,904.36
  6. Step 6: Final answer
    x = 589,395.76

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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.