Home / 1,221,544.87-1,685,031.54-761,861.37

Finding the Fourth Proportional to 1,221,544.87, 1,685,031.54 and 761,861.37

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Solution

The fourth proportional to 1,221,544.87, 1,685,031.54 and 761,861.37 is: 1,050,931.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,544.87 : 1,685,031.54 = 761,861.37 : x
  2. Step 2: Convert to fraction form
    1,221,544.87/1,685,031.54 = 761,861.37/x
  3. Step 3: Cross multiply
    1,221,544.87x = 1,685,031.54 × 761,861.37
  4. Step 4: Simplify right side
    1,221,544.87x = 1,283,760,437,557.61
  5. Step 5: Solve for x
    x = 1,283,760,437,557.61/1,221,544.87
  6. Step 6: Final answer
    x = 1,050,931.87

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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.