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Finding the Fourth Proportional to 607,744.80, 912,200.40 and 308,563.20

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Solution

The fourth proportional to 607,744.80, 912,200.40 and 308,563.20 is: 463,140.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,744.80 : 912,200.40 = 308,563.20 : x
  2. Step 2: Convert to fraction form
    607,744.80/912,200.40 = 308,563.20/x
  3. Step 3: Cross multiply
    607,744.80x = 912,200.40 × 308,563.20
  4. Step 4: Simplify right side
    607,744.80x = 281,471,474,465.28
  5. Step 5: Solve for x
    x = 281,471,474,465.28/607,744.80
  6. Step 6: Final answer
    x = 463,140.90

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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.