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Finding the Fourth Proportional to 479,903.70, 719,855.55 and 472,905.30

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Solution

The fourth proportional to 479,903.70, 719,855.55 and 472,905.30 is: 709,357.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,903.70 : 719,855.55 = 472,905.30 : x
  2. Step 2: Convert to fraction form
    479,903.70/719,855.55 = 472,905.30/x
  3. Step 3: Cross multiply
    479,903.70x = 719,855.55 × 472,905.30
  4. Step 4: Simplify right side
    479,903.70x = 340,423,504,829.42
  5. Step 5: Solve for x
    x = 340,423,504,829.42/479,903.70
  6. Step 6: Final answer
    x = 709,357.95

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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.