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Finding the Fourth Proportional to 1,307,585.47, 1,804,957.43 and 981,839.48

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Solution

The fourth proportional to 1,307,585.47, 1,804,957.43 and 981,839.48 is: 1,355,306.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307,585.47 : 1,804,957.43 = 981,839.48 : x
  2. Step 2: Convert to fraction form
    1,307,585.47/1,804,957.43 = 981,839.48/x
  3. Step 3: Cross multiply
    1,307,585.47x = 1,804,957.43 × 981,839.48
  4. Step 4: Simplify right side
    1,307,585.47x = 1,772,178,459,584.14
  5. Step 5: Solve for x
    x = 1,772,178,459,584.14/1,307,585.47
  6. Step 6: Final answer
    x = 1,355,306.03

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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.