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Finding the Fourth Proportional to 1,292,964.46, 1,784,290.93 and 749,415.53

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Solution

The fourth proportional to 1,292,964.46, 1,784,290.93 and 749,415.53 is: 1,034,193.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,964.46 : 1,784,290.93 = 749,415.53 : x
  2. Step 2: Convert to fraction form
    1,292,964.46/1,784,290.93 = 749,415.53/x
  3. Step 3: Cross multiply
    1,292,964.46x = 1,784,290.93 × 749,415.53
  4. Step 4: Simplify right side
    1,292,964.46x = 1,337,175,332,980.14
  5. Step 5: Solve for x
    x = 1,337,175,332,980.14/1,292,964.46
  6. Step 6: Final answer
    x = 1,034,193.42

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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.