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Finding the Fourth Proportional to 1,395,728.04, 1,926,285.76 and 851,935.98

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Solution

The fourth proportional to 1,395,728.04, 1,926,285.76 and 851,935.98 is: 1,175,782.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395,728.04 : 1,926,285.76 = 851,935.98 : x
  2. Step 2: Convert to fraction form
    1,395,728.04/1,926,285.76 = 851,935.98/x
  3. Step 3: Cross multiply
    1,395,728.04x = 1,926,285.76 × 851,935.98
  4. Step 4: Simplify right side
    1,395,728.04x = 1,641,072,146,705.64
  5. Step 5: Solve for x
    x = 1,641,072,146,705.64/1,395,728.04
  6. Step 6: Final answer
    x = 1,175,782.17

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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.