Home / 1,384,841.21-1,911,399.73-812,065.91

Finding the Fourth Proportional to 1,384,841.21, 1,911,399.73 and 812,065.91

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Solution

The fourth proportional to 1,384,841.21, 1,911,399.73 and 812,065.91 is: 1,120,837.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,841.21 : 1,911,399.73 = 812,065.91 : x
  2. Step 2: Convert to fraction form
    1,384,841.21/1,911,399.73 = 812,065.91/x
  3. Step 3: Cross multiply
    1,384,841.21x = 1,911,399.73 × 812,065.91
  4. Step 4: Simplify right side
    1,384,841.21x = 1,552,182,549,529.04
  5. Step 5: Solve for x
    x = 1,552,182,549,529.04/1,384,841.21
  6. Step 6: Final answer
    x = 1,120,837.93

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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.