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Finding the Fourth Proportional to 1,300,761.66, 1,795,005.32 and 719,985.92

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Solution

The fourth proportional to 1,300,761.66, 1,795,005.32 and 719,985.92 is: 993,555.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,300,761.66 : 1,795,005.32 = 719,985.92 : x
  2. Step 2: Convert to fraction form
    1,300,761.66/1,795,005.32 = 719,985.92/x
  3. Step 3: Cross multiply
    1,300,761.66x = 1,795,005.32 × 719,985.92
  4. Step 4: Simplify right side
    1,300,761.66x = 1,292,378,563,012.57
  5. Step 5: Solve for x
    x = 1,292,378,563,012.57/1,300,761.66
  6. Step 6: Final answer
    x = 993,555.24

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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.