Home / 430,854,714.63-646,372,866.47-139,699,133.89

Finding the Fourth Proportional to 430,854,714.63, 646,372,866.47 and 139,699,133.89

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Solution

The fourth proportional to 430,854,714.63, 646,372,866.47 and 139,699,133.89 is: 209,578,139.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,854,714.63 : 646,372,866.47 = 139,699,133.89 : x
  2. Step 2: Convert to fraction form
    430,854,714.63/646,372,866.47 = 139,699,133.89/x
  3. Step 3: Cross multiply
    430,854,714.63x = 646,372,866.47 × 139,699,133.89
  4. Step 4: Simplify right side
    430,854,714.63x = 90,297,729,613,541,184
  5. Step 5: Solve for x
    x = 90,297,729,613,541,184/430,854,714.63
  6. Step 6: Final answer
    x = 209,578,139.79

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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.