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Finding the Fourth Proportional to 618,362.30, 926,335.46 and 426,202.58

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Solution

The fourth proportional to 618,362.30, 926,335.46 and 426,202.58 is: 638,471.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,362.30 : 926,335.46 = 426,202.58 : x
  2. Step 2: Convert to fraction form
    618,362.30/926,335.46 = 426,202.58/x
  3. Step 3: Cross multiply
    618,362.30x = 926,335.46 × 426,202.58
  4. Step 4: Simplify right side
    618,362.30x = 394,806,559,431.32
  5. Step 5: Solve for x
    x = 394,806,559,431.32/618,362.30
  6. Step 6: Final answer
    x = 638,471.27

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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.