Home / 1,185,281.96-1,635,689.19-641,417.78

Finding the Fourth Proportional to 1,185,281.96, 1,635,689.19 and 641,417.78

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Solution

The fourth proportional to 1,185,281.96, 1,635,689.19 and 641,417.78 is: 885,156.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,281.96 : 1,635,689.19 = 641,417.78 : x
  2. Step 2: Convert to fraction form
    1,185,281.96/1,635,689.19 = 641,417.78/x
  3. Step 3: Cross multiply
    1,185,281.96x = 1,635,689.19 × 641,417.78
  4. Step 4: Simplify right side
    1,185,281.96x = 1,049,160,129,019.80
  5. Step 5: Solve for x
    x = 1,049,160,129,019.80/1,185,281.96
  6. Step 6: Final answer
    x = 885,156.58

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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.