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Finding the Fourth Proportional to 553,257.20, 829,885.80 and 548,008.40

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Solution

The fourth proportional to 553,257.20, 829,885.80 and 548,008.40 is: 822,012.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,257.20 : 829,885.80 = 548,008.40 : x
  2. Step 2: Convert to fraction form
    553,257.20/829,885.80 = 548,008.40/x
  3. Step 3: Cross multiply
    553,257.20x = 829,885.80 × 548,008.40
  4. Step 4: Simplify right side
    553,257.20x = 454,784,389,440.72
  5. Step 5: Solve for x
    x = 454,784,389,440.72/553,257.20
  6. Step 6: Final answer
    x = 822,012.60

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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.