Home / 729,772.60-1,007,076.90-407,488.36

Finding the Fourth Proportional to 729,772.60, 1,007,076.90 and 407,488.36

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Solution

The fourth proportional to 729,772.60, 1,007,076.90 and 407,488.36 is: 562,328.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,772.60 : 1,007,076.90 = 407,488.36 : x
  2. Step 2: Convert to fraction form
    729,772.60/1,007,076.90 = 407,488.36/x
  3. Step 3: Cross multiply
    729,772.60x = 1,007,076.90 × 407,488.36
  4. Step 4: Simplify right side
    729,772.60x = 410,372,114,374.88
  5. Step 5: Solve for x
    x = 410,372,114,374.88/729,772.60
  6. Step 6: Final answer
    x = 562,328.75

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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.