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Finding the Fourth Proportional to 553,502.70, 828,504.45 and 396,038.70

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Solution

The fourth proportional to 553,502.70, 828,504.45 and 396,038.70 is: 592,806.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,502.70 : 828,504.45 = 396,038.70 : x
  2. Step 2: Convert to fraction form
    553,502.70/828,504.45 = 396,038.70/x
  3. Step 3: Cross multiply
    553,502.70x = 828,504.45 × 396,038.70
  4. Step 4: Simplify right side
    553,502.70x = 328,119,825,322.22
  5. Step 5: Solve for x
    x = 328,119,825,322.22/553,502.70
  6. Step 6: Final answer
    x = 592,806.19

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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.