Home / 1,377,219.51-1,901,509.02-861,196.86

Finding the Fourth Proportional to 1,377,219.51, 1,901,509.02 and 861,196.86

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Solution

The fourth proportional to 1,377,219.51, 1,901,509.02 and 861,196.86 is: 1,189,043.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377,219.51 : 1,901,509.02 = 861,196.86 : x
  2. Step 2: Convert to fraction form
    1,377,219.51/1,901,509.02 = 861,196.86/x
  3. Step 3: Cross multiply
    1,377,219.51x = 1,901,509.02 × 861,196.86
  4. Step 4: Simplify right side
    1,377,219.51x = 1,637,573,597,285.68
  5. Step 5: Solve for x
    x = 1,637,573,597,285.68/1,377,219.51
  6. Step 6: Final answer
    x = 1,189,043.28

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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.