Home / 425,626,687.40-638,440,031.10-231,463,077.80

Finding the Fourth Proportional to 425,626,687.40, 638,440,031.10 and 231,463,077.80

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Solution

The fourth proportional to 425,626,687.40, 638,440,031.10 and 231,463,077.80 is: 347,194,616.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,626,687.40 : 638,440,031.10 = 231,463,077.80 : x
  2. Step 2: Convert to fraction form
    425,626,687.40/638,440,031.10 = 231,463,077.80/x
  3. Step 3: Cross multiply
    425,626,687.40x = 638,440,031.10 × 231,463,077.80
  4. Step 4: Simplify right side
    425,626,687.40x = 147,775,294,589,133,728
  5. Step 5: Solve for x
    x = 147,775,294,589,133,728/425,626,687.40
  6. Step 6: Final answer
    x = 347,194,616.70

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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.