Home / 1,383,253.20-1,908,851.40-771,424.56

Finding the Fourth Proportional to 1,383,253.20, 1,908,851.40 and 771,424.56

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Solution

The fourth proportional to 1,383,253.20, 1,908,851.40 and 771,424.56 is: 1,064,544.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,253.20 : 1,908,851.40 = 771,424.56 : x
  2. Step 2: Convert to fraction form
    1,383,253.20/1,908,851.40 = 771,424.56/x
  3. Step 3: Cross multiply
    1,383,253.20x = 1,908,851.40 × 771,424.56
  4. Step 4: Simplify right side
    1,383,253.20x = 1,472,534,851,350.38
  5. Step 5: Solve for x
    x = 1,472,534,851,350.38/1,383,253.20
  6. Step 6: Final answer
    x = 1,064,544.69

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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.