Home / 920,431,327.72-1,380,652,152.90-307,013,869.48

Finding the Fourth Proportional to 920,431,327.72, 1,380,652,152.90 and 307,013,869.48

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Solution

The fourth proportional to 920,431,327.72, 1,380,652,152.90 and 307,013,869.48 is: 460,522,525.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,431,327.72 : 1,380,652,152.90 = 307,013,869.48 : x
  2. Step 2: Convert to fraction form
    920,431,327.72/1,380,652,152.90 = 307,013,869.48/x
  3. Step 3: Cross multiply
    920,431,327.72x = 1,380,652,152.90 × 307,013,869.48
  4. Step 4: Simplify right side
    920,431,327.72x = 423,879,359,867,721,664
  5. Step 5: Solve for x
    x = 423,879,359,867,721,664/920,431,327.72
  6. Step 6: Final answer
    x = 460,522,525.80

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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.