Home / 1,279,407.51-1,919,775.47-521,804.79

Finding the Fourth Proportional to 1,279,407.51, 1,919,775.47 and 521,804.79

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Solution

The fourth proportional to 1,279,407.51, 1,919,775.47 and 521,804.79 is: 782,978.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,407.51 : 1,919,775.47 = 521,804.79 : x
  2. Step 2: Convert to fraction form
    1,279,407.51/1,919,775.47 = 521,804.79/x
  3. Step 3: Cross multiply
    1,279,407.51x = 1,919,775.47 × 521,804.79
  4. Step 4: Simplify right side
    1,279,407.51x = 1,001,748,033,361.48
  5. Step 5: Solve for x
    x = 1,001,748,033,361.48/1,279,407.51
  6. Step 6: Final answer
    x = 782,978.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.