Home / 443,349,117.80-665,023,676.70-280,090,442.60

Finding the Fourth Proportional to 443,349,117.80, 665,023,676.70 and 280,090,442.60

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Solution

The fourth proportional to 443,349,117.80, 665,023,676.70 and 280,090,442.60 is: 420,135,663.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,349,117.80 : 665,023,676.70 = 280,090,442.60 : x
  2. Step 2: Convert to fraction form
    443,349,117.80/665,023,676.70 = 280,090,442.60/x
  3. Step 3: Cross multiply
    443,349,117.80x = 665,023,676.70 × 280,090,442.60
  4. Step 4: Simplify right side
    443,349,117.80x = 186,266,775,946,382,336
  5. Step 5: Solve for x
    x = 186,266,775,946,382,336/443,349,117.80
  6. Step 6: Final answer
    x = 420,135,663.90

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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.