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Finding the Fourth Proportional to 553,379.40, 830,069.10 and 329,430.60

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Solution

The fourth proportional to 553,379.40, 830,069.10 and 329,430.60 is: 494,145.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,379.40 : 830,069.10 = 329,430.60 : x
  2. Step 2: Convert to fraction form
    553,379.40/830,069.10 = 329,430.60/x
  3. Step 3: Cross multiply
    553,379.40x = 830,069.10 × 329,430.60
  4. Step 4: Simplify right side
    553,379.40x = 273,450,161,654.46
  5. Step 5: Solve for x
    x = 273,450,161,654.46/553,379.40
  6. Step 6: Final answer
    x = 494,145.90

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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.