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Finding the Fourth Proportional to 553,504.20, 828,506.70 and 396,040.20

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Solution

The fourth proportional to 553,504.20, 828,506.70 and 396,040.20 is: 592,808.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,504.20 : 828,506.70 = 396,040.20 : x
  2. Step 2: Convert to fraction form
    553,504.20/828,506.70 = 396,040.20/x
  3. Step 3: Cross multiply
    553,504.20x = 828,506.70 × 396,040.20
  4. Step 4: Simplify right side
    553,504.20x = 328,121,959,169.34
  5. Step 5: Solve for x
    x = 328,121,959,169.34/553,504.20
  6. Step 6: Final answer
    x = 592,808.44

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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.