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Finding the Fourth Proportional to 1,319,751, 1,821,261.24 and 716,139

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Solution

The fourth proportional to 1,319,751, 1,821,261.24 and 716,139 is: 988,274.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,751 : 1,821,261.24 = 716,139 : x
  2. Step 2: Convert to fraction form
    1,319,751/1,821,261.24 = 716,139/x
  3. Step 3: Cross multiply
    1,319,751x = 1,821,261.24 × 716,139
  4. Step 4: Simplify right side
    1,319,751x = 1,304,276,203,152.36
  5. Step 5: Solve for x
    x = 1,304,276,203,152.36/1,319,751
  6. Step 6: Final answer
    x = 988,274.46

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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.