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Finding the Fourth Proportional to 553,346.20, 830,019.30 and 548,680.60

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Solution

The fourth proportional to 553,346.20, 830,019.30 and 548,680.60 is: 823,020.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,346.20 : 830,019.30 = 548,680.60 : x
  2. Step 2: Convert to fraction form
    553,346.20/830,019.30 = 548,680.60/x
  3. Step 3: Cross multiply
    553,346.20x = 830,019.30 × 548,680.60
  4. Step 4: Simplify right side
    553,346.20x = 455,415,487,535.58
  5. Step 5: Solve for x
    x = 455,415,487,535.58/553,346.20
  6. Step 6: Final answer
    x = 823,020.90

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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.