Home / 1,387,853.55-1,915,149.29-776,056.77

Finding the Fourth Proportional to 1,387,853.55, 1,915,149.29 and 776,056.77

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Solution

The fourth proportional to 1,387,853.55, 1,915,149.29 and 776,056.77 is: 1,070,908.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,853.55 : 1,915,149.29 = 776,056.77 : x
  2. Step 2: Convert to fraction form
    1,387,853.55/1,915,149.29 = 776,056.77/x
  3. Step 3: Cross multiply
    1,387,853.55x = 1,915,149.29 × 776,056.77
  4. Step 4: Simplify right side
    1,387,853.55x = 1,486,264,568,184.91
  5. Step 5: Solve for x
    x = 1,486,264,568,184.91/1,387,853.55
  6. Step 6: Final answer
    x = 1,070,908.79

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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.