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Finding the Fourth Proportional to 474,143.70, 711,215.55 and 455,772.90

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Solution

The fourth proportional to 474,143.70, 711,215.55 and 455,772.90 is: 683,659.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,143.70 : 711,215.55 = 455,772.90 : x
  2. Step 2: Convert to fraction form
    474,143.70/711,215.55 = 455,772.90/x
  3. Step 3: Cross multiply
    474,143.70x = 711,215.55 × 455,772.90
  4. Step 4: Simplify right side
    474,143.70x = 324,152,773,748.60
  5. Step 5: Solve for x
    x = 324,152,773,748.60/474,143.70
  6. Step 6: Final answer
    x = 683,659.35

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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.