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Finding the Fourth Proportional to 1,293,349.93, 1,784,737.51 and 776,796.89

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Solution

The fourth proportional to 1,293,349.93, 1,784,737.51 and 776,796.89 is: 1,071,928.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,349.93 : 1,784,737.51 = 776,796.89 : x
  2. Step 2: Convert to fraction form
    1,293,349.93/1,784,737.51 = 776,796.89/x
  3. Step 3: Cross multiply
    1,293,349.93x = 1,784,737.51 × 776,796.89
  4. Step 4: Simplify right side
    1,293,349.93x = 1,386,378,545,974.42
  5. Step 5: Solve for x
    x = 1,386,378,545,974.42/1,293,349.93
  6. Step 6: Final answer
    x = 1,071,928.42

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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.