Home / 1,221,543.87-1,685,030.17-761,860.37

Finding the Fourth Proportional to 1,221,543.87, 1,685,030.17 and 761,860.37

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Solution

The fourth proportional to 1,221,543.87, 1,685,030.17 and 761,860.37 is: 1,050,930.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,543.87 : 1,685,030.17 = 761,860.37 : x
  2. Step 2: Convert to fraction form
    1,221,543.87/1,685,030.17 = 761,860.37/x
  3. Step 3: Cross multiply
    1,221,543.87x = 1,685,030.17 × 761,860.37
  4. Step 4: Simplify right side
    1,221,543.87x = 1,283,757,704,968.06
  5. Step 5: Solve for x
    x = 1,283,757,704,968.06/1,221,543.87
  6. Step 6: Final answer
    x = 1,050,930.50

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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.