Home / 1,186,520.37-1,637,397.40-642,656

Finding the Fourth Proportional to 1,186,520.37, 1,637,397.40 and 642,656

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Solution

The fourth proportional to 1,186,520.37, 1,637,397.40 and 642,656 is: 886,864.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,520.37 : 1,637,397.40 = 642,656 : x
  2. Step 2: Convert to fraction form
    1,186,520.37/1,637,397.40 = 642,656/x
  3. Step 3: Cross multiply
    1,186,520.37x = 1,637,397.40 × 642,656
  4. Step 4: Simplify right side
    1,186,520.37x = 1,052,283,263,494.40
  5. Step 5: Solve for x
    x = 1,052,283,263,494.40/1,186,520.37
  6. Step 6: Final answer
    x = 886,864.90

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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.