Home / 1,190,319.64-1,643,280.80-917,790.28

Finding the Fourth Proportional to 1,190,319.64, 1,643,280.80 and 917,790.28

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Solution

The fourth proportional to 1,190,319.64, 1,643,280.80 and 917,790.28 is: 1,267,043.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,319.64 : 1,643,280.80 = 917,790.28 : x
  2. Step 2: Convert to fraction form
    1,190,319.64/1,643,280.80 = 917,790.28/x
  3. Step 3: Cross multiply
    1,190,319.64x = 1,643,280.80 × 917,790.28
  4. Step 4: Simplify right side
    1,190,319.64x = 1,508,187,145,550.62
  5. Step 5: Solve for x
    x = 1,508,187,145,550.62/1,190,319.64
  6. Step 6: Final answer
    x = 1,267,043.82

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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.