Home / 1,398,076.29-1,929,326.90-786,228.86

Finding the Fourth Proportional to 1,398,076.29, 1,929,326.90 and 786,228.86

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Solution

The fourth proportional to 1,398,076.29, 1,929,326.90 and 786,228.86 is: 1,084,985.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,076.29 : 1,929,326.90 = 786,228.86 : x
  2. Step 2: Convert to fraction form
    1,398,076.29/1,929,326.90 = 786,228.86/x
  3. Step 3: Cross multiply
    1,398,076.29x = 1,929,326.90 × 786,228.86
  4. Step 4: Simplify right side
    1,398,076.29x = 1,516,892,475,576.56
  5. Step 5: Solve for x
    x = 1,516,892,475,576.56/1,398,076.29
  6. Step 6: Final answer
    x = 1,084,985.48

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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.