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Finding the Fourth Proportional to 1,335,364.88, 1,842,743.40 and 731,739.92

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Solution

The fourth proportional to 1,335,364.88, 1,842,743.40 and 731,739.92 is: 1,009,768.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335,364.88 : 1,842,743.40 = 731,739.92 : x
  2. Step 2: Convert to fraction form
    1,335,364.88/1,842,743.40 = 731,739.92/x
  3. Step 3: Cross multiply
    1,335,364.88x = 1,842,743.40 × 731,739.92
  4. Step 4: Simplify right side
    1,335,364.88x = 1,348,408,908,096.53
  5. Step 5: Solve for x
    x = 1,348,408,908,096.53/1,335,364.88
  6. Step 6: Final answer
    x = 1,009,768.14

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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.