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Finding the Fourth Proportional to 553,687.20, 830,530.80 and 548,438.40

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Solution

The fourth proportional to 553,687.20, 830,530.80 and 548,438.40 is: 822,657.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,687.20 : 830,530.80 = 548,438.40 : x
  2. Step 2: Convert to fraction form
    553,687.20/830,530.80 = 548,438.40/x
  3. Step 3: Cross multiply
    553,687.20x = 830,530.80 × 548,438.40
  4. Step 4: Simplify right side
    553,687.20x = 455,494,983,102.72
  5. Step 5: Solve for x
    x = 455,494,983,102.72/553,687.20
  6. Step 6: Final answer
    x = 822,657.60

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Similar ratio
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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.