Home / 443,349,109.80-665,023,664.70-280,090,434.60

Finding the Fourth Proportional to 443,349,109.80, 665,023,664.70 and 280,090,434.60

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Solution

The fourth proportional to 443,349,109.80, 665,023,664.70 and 280,090,434.60 is: 420,135,651.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,349,109.80 : 665,023,664.70 = 280,090,434.60 : x
  2. Step 2: Convert to fraction form
    443,349,109.80/665,023,664.70 = 280,090,434.60/x
  3. Step 3: Cross multiply
    443,349,109.80x = 665,023,664.70 × 280,090,434.60
  4. Step 4: Simplify right side
    443,349,109.80x = 186,266,767,265,107,712
  5. Step 5: Solve for x
    x = 186,266,767,265,107,712/443,349,109.80
  6. Step 6: Final answer
    x = 420,135,651.90

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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.