Home / 645,463.50-890,739.63-377,191.50

Finding the Fourth Proportional to 645,463.50, 890,739.63 and 377,191.50

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Solution

The fourth proportional to 645,463.50, 890,739.63 and 377,191.50 is: 520,524.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,463.50 : 890,739.63 = 377,191.50 : x
  2. Step 2: Convert to fraction form
    645,463.50/890,739.63 = 377,191.50/x
  3. Step 3: Cross multiply
    645,463.50x = 890,739.63 × 377,191.50
  4. Step 4: Simplify right side
    645,463.50x = 335,979,417,149.15
  5. Step 5: Solve for x
    x = 335,979,417,149.15/645,463.50
  6. Step 6: Final answer
    x = 520,524.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.