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Finding the Fourth Proportional to 1,009,655.02, 1,393,838.13 and 779,696.02

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Solution

The fourth proportional to 1,009,655.02, 1,393,838.13 and 779,696.02 is: 1,076,377.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009,655.02 : 1,393,838.13 = 779,696.02 : x
  2. Step 2: Convert to fraction form
    1,009,655.02/1,393,838.13 = 779,696.02/x
  3. Step 3: Cross multiply
    1,009,655.02x = 1,393,838.13 × 779,696.02
  4. Step 4: Simplify right side
    1,009,655.02x = 1,086,770,042,485.24
  5. Step 5: Solve for x
    x = 1,086,770,042,485.24/1,009,655.02
  6. Step 6: Final answer
    x = 1,076,377.60

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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.