Home / 722,788.31-997,453.77-400,503.78

Finding the Fourth Proportional to 722,788.31, 997,453.77 and 400,503.78

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Solution

The fourth proportional to 722,788.31, 997,453.77 and 400,503.78 is: 552,698.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,788.31 : 997,453.77 = 400,503.78 : x
  2. Step 2: Convert to fraction form
    722,788.31/997,453.77 = 400,503.78/x
  3. Step 3: Cross multiply
    722,788.31x = 997,453.77 × 400,503.78
  4. Step 4: Simplify right side
    722,788.31x = 399,484,005,260.25
  5. Step 5: Solve for x
    x = 399,484,005,260.25/722,788.31
  6. Step 6: Final answer
    x = 552,698.49

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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.