Home / 1,272,834.06-1,909,779.78-515,211.12

Finding the Fourth Proportional to 1,272,834.06, 1,909,779.78 and 515,211.12

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Solution

The fourth proportional to 1,272,834.06, 1,909,779.78 and 515,211.12 is: 773,030.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,834.06 : 1,909,779.78 = 515,211.12 : x
  2. Step 2: Convert to fraction form
    1,272,834.06/1,909,779.78 = 515,211.12/x
  3. Step 3: Cross multiply
    1,272,834.06x = 1,909,779.78 × 515,211.12
  4. Step 4: Simplify right side
    1,272,834.06x = 983,939,779,407.15
  5. Step 5: Solve for x
    x = 983,939,779,407.15/1,272,834.06
  6. Step 6: Final answer
    x = 773,030.68

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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.