Home / 643,038.31-964,773.56-451,112.77

Finding the Fourth Proportional to 643,038.31, 964,773.56 and 451,112.77

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Solution

The fourth proportional to 643,038.31, 964,773.56 and 451,112.77 is: 676,820.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,038.31 : 964,773.56 = 451,112.77 : x
  2. Step 2: Convert to fraction form
    643,038.31/964,773.56 = 451,112.77/x
  3. Step 3: Cross multiply
    643,038.31x = 964,773.56 × 451,112.77
  4. Step 4: Simplify right side
    643,038.31x = 435,221,670,818.80
  5. Step 5: Solve for x
    x = 435,221,670,818.80/643,038.31
  6. Step 6: Final answer
    x = 676,820.75

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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.