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Finding the Fourth Proportional to 553,501.20, 828,502.20 and 396,037.20

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Solution

The fourth proportional to 553,501.20, 828,502.20 and 396,037.20 is: 592,803.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,501.20 : 828,502.20 = 396,037.20 : x
  2. Step 2: Convert to fraction form
    553,501.20/828,502.20 = 396,037.20/x
  3. Step 3: Cross multiply
    553,501.20x = 828,502.20 × 396,037.20
  4. Step 4: Simplify right side
    553,501.20x = 328,117,691,481.84
  5. Step 5: Solve for x
    x = 328,117,691,481.84/553,501.20
  6. Step 6: Final answer
    x = 592,803.94

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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.