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Finding the Fourth Proportional to 1,249,754.94, 1,723,704.98 and 863,217.24

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Solution

The fourth proportional to 1,249,754.94, 1,723,704.98 and 863,217.24 is: 1,190,578.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,754.94 : 1,723,704.98 = 863,217.24 : x
  2. Step 2: Convert to fraction form
    1,249,754.94/1,723,704.98 = 863,217.24/x
  3. Step 3: Cross multiply
    1,249,754.94x = 1,723,704.98 × 863,217.24
  4. Step 4: Simplify right side
    1,249,754.94x = 1,487,931,844,629.88
  5. Step 5: Solve for x
    x = 1,487,931,844,629.88/1,249,754.94
  6. Step 6: Final answer
    x = 1,190,578.89

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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.