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Finding the Fourth Proportional to 893,761.32, 1,233,395.88 and 485,866.32

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Solution

The fourth proportional to 893,761.32, 1,233,395.88 and 485,866.32 is: 670,498.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,761.32 : 1,233,395.88 = 485,866.32 : x
  2. Step 2: Convert to fraction form
    893,761.32/1,233,395.88 = 485,866.32/x
  3. Step 3: Cross multiply
    893,761.32x = 1,233,395.88 × 485,866.32
  4. Step 4: Simplify right side
    893,761.32x = 599,265,517,318.76
  5. Step 5: Solve for x
    x = 599,265,517,318.76/893,761.32
  6. Step 6: Final answer
    x = 670,498.38

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1.5x scale

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.