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Finding the Fourth Proportional to 474,403.80, 711,605.70 and 435,912.60

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Solution

The fourth proportional to 474,403.80, 711,605.70 and 435,912.60 is: 653,868.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,403.80 : 711,605.70 = 435,912.60 : x
  2. Step 2: Convert to fraction form
    474,403.80/711,605.70 = 435,912.60/x
  3. Step 3: Cross multiply
    474,403.80x = 711,605.70 × 435,912.60
  4. Step 4: Simplify right side
    474,403.80x = 310,197,890,861.82
  5. Step 5: Solve for x
    x = 310,197,890,861.82/474,403.80
  6. Step 6: Final answer
    x = 653,868.90

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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.