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Finding the Fourth Proportional to 625,018,644.50, 862,446,453.48 and 342,686,790.25

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Solution

The fourth proportional to 625,018,644.50, 862,446,453.48 and 342,686,790.25 is: 472,864,304.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,018,644.50 : 862,446,453.48 = 342,686,790.25 : x
  2. Step 2: Convert to fraction form
    625,018,644.50/862,446,453.48 = 342,686,790.25/x
  3. Step 3: Cross multiply
    625,018,644.50x = 862,446,453.48 × 342,686,790.25
  4. Step 4: Simplify right side
    625,018,644.50x = 295,549,006,903,401,024
  5. Step 5: Solve for x
    x = 295,549,006,903,401,024/625,018,644.50
  6. Step 6: Final answer
    x = 472,864,304.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.