Home / 724,334.69-999,579.39-397,639.56

Finding the Fourth Proportional to 724,334.69, 999,579.39 and 397,639.56

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Solution

The fourth proportional to 724,334.69, 999,579.39 and 397,639.56 is: 548,741.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,334.69 : 999,579.39 = 397,639.56 : x
  2. Step 2: Convert to fraction form
    724,334.69/999,579.39 = 397,639.56/x
  3. Step 3: Cross multiply
    724,334.69x = 999,579.39 × 397,639.56
  4. Step 4: Simplify right side
    724,334.69x = 397,472,314,437.03
  5. Step 5: Solve for x
    x = 397,472,314,437.03/724,334.69
  6. Step 6: Final answer
    x = 548,741.24

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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.