Home / 2,153,869.11-2,972,359.67-1,187,034.21

Finding the Fourth Proportional to 2,153,869.11, 2,972,359.67 and 1,187,034.21

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Solution

The fourth proportional to 2,153,869.11, 2,972,359.67 and 1,187,034.21 is: 1,638,118.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153,869.11 : 2,972,359.67 = 1,187,034.21 : x
  2. Step 2: Convert to fraction form
    2,153,869.11/2,972,359.67 = 1,187,034.21/x
  3. Step 3: Cross multiply
    2,153,869.11x = 2,972,359.67 × 1,187,034.21
  4. Step 4: Simplify right side
    2,153,869.11x = 3,528,292,606,779.14
  5. Step 5: Solve for x
    x = 3,528,292,606,779.14/2,153,869.11
  6. Step 6: Final answer
    x = 1,638,118.39

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1.5x scale

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.