Home / 1,011,399.96-1,517,321.52-380,313.78

Finding the Fourth Proportional to 1,011,399.96, 1,517,321.52 and 380,313.78

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Solution

The fourth proportional to 1,011,399.96, 1,517,321.52 and 380,313.78 is: 570,553.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011,399.96 : 1,517,321.52 = 380,313.78 : x
  2. Step 2: Convert to fraction form
    1,011,399.96/1,517,321.52 = 380,313.78/x
  3. Step 3: Cross multiply
    1,011,399.96x = 1,517,321.52 × 380,313.78
  4. Step 4: Simplify right side
    1,011,399.96x = 577,058,282,746.55
  5. Step 5: Solve for x
    x = 577,058,282,746.55/1,011,399.96
  6. Step 6: Final answer
    x = 570,553.99

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1.5x scale

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.