Home / 1,142,976.32-1,712,805.60-643,273.28

Finding the Fourth Proportional to 1,142,976.32, 1,712,805.60 and 643,273.28

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Solution

The fourth proportional to 1,142,976.32, 1,712,805.60 and 643,273.28 is: 963,976.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,142,976.32 : 1,712,805.60 = 643,273.28 : x
  2. Step 2: Convert to fraction form
    1,142,976.32/1,712,805.60 = 643,273.28/x
  3. Step 3: Cross multiply
    1,142,976.32x = 1,712,805.60 × 643,273.28
  4. Step 4: Simplify right side
    1,142,976.32x = 1,101,802,076,314.37
  5. Step 5: Solve for x
    x = 1,101,802,076,314.37/1,142,976.32
  6. Step 6: Final answer
    x = 963,976.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.