Home / 430,854,716.88-646,372,869.84-139,699,136.16

Finding the Fourth Proportional to 430,854,716.88, 646,372,869.84 and 139,699,136.16

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Solution

The fourth proportional to 430,854,716.88, 646,372,869.84 and 139,699,136.16 is: 209,578,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,854,716.88 : 646,372,869.84 = 139,699,136.16 : x
  2. Step 2: Convert to fraction form
    430,854,716.88/646,372,869.84 = 139,699,136.16/x
  3. Step 3: Cross multiply
    430,854,716.88x = 646,372,869.84 × 139,699,136.16
  4. Step 4: Simplify right side
    430,854,716.88x = 90,297,731,553,908,112
  5. Step 5: Solve for x
    x = 90,297,731,553,908,112/430,854,716.88
  6. Step 6: Final answer
    x = 209,578,143.20

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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.