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Finding the Fourth Proportional to 618,219.70, 926,811.15 and 322,731.70

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Solution

The fourth proportional to 618,219.70, 926,811.15 and 322,731.70 is: 483,826.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,219.70 : 926,811.15 = 322,731.70 : x
  2. Step 2: Convert to fraction form
    618,219.70/926,811.15 = 322,731.70/x
  3. Step 3: Cross multiply
    618,219.70x = 926,811.15 × 322,731.70
  4. Step 4: Simplify right side
    618,219.70x = 299,111,338,018.46
  5. Step 5: Solve for x
    x = 299,111,338,018.46/618,219.70
  6. Step 6: Final answer
    x = 483,826.93

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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.