Home / 402,503,423.40-603,755,135.10-129,874,190.40

Finding the Fourth Proportional to 402,503,423.40, 603,755,135.10 and 129,874,190.40

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Solution

The fourth proportional to 402,503,423.40, 603,755,135.10 and 129,874,190.40 is: 194,811,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,503,423.40 : 603,755,135.10 = 129,874,190.40 : x
  2. Step 2: Convert to fraction form
    402,503,423.40/603,755,135.10 = 129,874,190.40/x
  3. Step 3: Cross multiply
    402,503,423.40x = 603,755,135.10 × 129,874,190.40
  4. Step 4: Simplify right side
    402,503,423.40x = 78,412,209,370,955,136
  5. Step 5: Solve for x
    x = 78,412,209,370,955,136/402,503,423.40
  6. Step 6: Final answer
    x = 194,811,285.60

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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.