Home / 440,843,905.20-660,510,030.60-287,410,983.60

Finding the Fourth Proportional to 440,843,905.20, 660,510,030.60 and 287,410,983.60

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Solution

The fourth proportional to 440,843,905.20, 660,510,030.60 and 287,410,983.60 is: 430,623,709.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,843,905.20 : 660,510,030.60 = 287,410,983.60 : x
  2. Step 2: Convert to fraction form
    440,843,905.20/660,510,030.60 = 287,410,983.60/x
  3. Step 3: Cross multiply
    440,843,905.20x = 660,510,030.60 × 287,410,983.60
  4. Step 4: Simplify right side
    440,843,905.20x = 189,837,837,572,412,128
  5. Step 5: Solve for x
    x = 189,837,837,572,412,128/440,843,905.20
  6. Step 6: Final answer
    x = 430,623,709.06

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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.