Home / 391,175,999.40-586,763,999.10-197,012,389.80

Finding the Fourth Proportional to 391,175,999.40, 586,763,999.10 and 197,012,389.80

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Solution

The fourth proportional to 391,175,999.40, 586,763,999.10 and 197,012,389.80 is: 295,518,584.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,175,999.40 : 586,763,999.10 = 197,012,389.80 : x
  2. Step 2: Convert to fraction form
    391,175,999.40/586,763,999.10 = 197,012,389.80/x
  3. Step 3: Cross multiply
    391,175,999.40x = 586,763,999.10 × 197,012,389.80
  4. Step 4: Simplify right side
    391,175,999.40x = 115,599,777,711,296,064
  5. Step 5: Solve for x
    x = 115,599,777,711,296,064/391,175,999.40
  6. Step 6: Final answer
    x = 295,518,584.70

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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.