Home / 1,279,407.12-1,919,774.86-521,804.40

Finding the Fourth Proportional to 1,279,407.12, 1,919,774.86 and 521,804.40

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Solution

The fourth proportional to 1,279,407.12, 1,919,774.86 and 521,804.40 is: 782,977.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,407.12 : 1,919,774.86 = 521,804.40 : x
  2. Step 2: Convert to fraction form
    1,279,407.12/1,919,774.86 = 521,804.40/x
  3. Step 3: Cross multiply
    1,279,407.12x = 1,919,774.86 × 521,804.40
  4. Step 4: Simplify right side
    1,279,407.12x = 1,001,746,968,957.38
  5. Step 5: Solve for x
    x = 1,001,746,968,957.38/1,279,407.12
  6. Step 6: Final answer
    x = 782,977.48

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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.