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Finding the Fourth Proportional to 618,528.48, 928,085.40 and 338,037.36

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Solution

The fourth proportional to 618,528.48, 928,085.40 and 338,037.36 is: 507,216.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,528.48 : 928,085.40 = 338,037.36 : x
  2. Step 2: Convert to fraction form
    618,528.48/928,085.40 = 338,037.36/x
  3. Step 3: Cross multiply
    618,528.48x = 928,085.40 × 338,037.36
  4. Step 4: Simplify right side
    618,528.48x = 313,727,538,470.54
  5. Step 5: Solve for x
    x = 313,727,538,470.54/618,528.48
  6. Step 6: Final answer
    x = 507,216.00

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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.