Home / 672,378,090.81-1,006,498,554.96-438,705,649.47

Finding the Fourth Proportional to 672,378,090.81, 1,006,498,554.96 and 438,705,649.47

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Solution

The fourth proportional to 672,378,090.81, 1,006,498,554.96 and 438,705,649.47 is: 656,708,789.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,378,090.81 : 1,006,498,554.96 = 438,705,649.47 : x
  2. Step 2: Convert to fraction form
    672,378,090.81/1,006,498,554.96 = 438,705,649.47/x
  3. Step 3: Cross multiply
    672,378,090.81x = 1,006,498,554.96 × 438,705,649.47
  4. Step 4: Simplify right side
    672,378,090.81x = 441,556,602,244,343,360
  5. Step 5: Solve for x
    x = 441,556,602,244,343,360/672,378,090.81
  6. Step 6: Final answer
    x = 656,708,789.71

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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.