Home / 440,123,327.20-660,184,990.80-285,155,131.60

Finding the Fourth Proportional to 440,123,327.20, 660,184,990.80 and 285,155,131.60

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Solution

The fourth proportional to 440,123,327.20, 660,184,990.80 and 285,155,131.60 is: 427,732,697.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,123,327.20 : 660,184,990.80 = 285,155,131.60 : x
  2. Step 2: Convert to fraction form
    440,123,327.20/660,184,990.80 = 285,155,131.60/x
  3. Step 3: Cross multiply
    440,123,327.20x = 660,184,990.80 × 285,155,131.60
  4. Step 4: Simplify right side
    440,123,327.20x = 188,255,137,931,918,784
  5. Step 5: Solve for x
    x = 188,255,137,931,918,784/440,123,327.20
  6. Step 6: Final answer
    x = 427,732,697.40

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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.