Home / 1,272,828.90-1,909,772.07-515,205.93

Finding the Fourth Proportional to 1,272,828.90, 1,909,772.07 and 515,205.93

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Solution

The fourth proportional to 1,272,828.90, 1,909,772.07 and 515,205.93 is: 773,022.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,828.90 : 1,909,772.07 = 515,205.93 : x
  2. Step 2: Convert to fraction form
    1,272,828.90/1,909,772.07 = 515,205.93/x
  3. Step 3: Cross multiply
    1,272,828.90x = 1,909,772.07 × 515,205.93
  4. Step 4: Simplify right side
    1,272,828.90x = 983,925,895,412.38
  5. Step 5: Solve for x
    x = 983,925,895,412.38/1,272,828.90
  6. Step 6: Final answer
    x = 773,022.91

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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.