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Finding the Fourth Proportional to 553,614.60, 830,421.90 and 273,678.60

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Solution

The fourth proportional to 553,614.60, 830,421.90 and 273,678.60 is: 410,517.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,614.60 : 830,421.90 = 273,678.60 : x
  2. Step 2: Convert to fraction form
    553,614.60/830,421.90 = 273,678.60/x
  3. Step 3: Cross multiply
    553,614.60x = 830,421.90 × 273,678.60
  4. Step 4: Simplify right side
    553,614.60x = 227,268,703,001.34
  5. Step 5: Solve for x
    x = 227,268,703,001.34/553,614.60
  6. Step 6: Final answer
    x = 410,517.90

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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.