Home / 672,378,150.60-1,006,498,643.74-438,705,708.02

Finding the Fourth Proportional to 672,378,150.60, 1,006,498,643.74 and 438,705,708.02

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Solution

The fourth proportional to 672,378,150.60, 1,006,498,643.74 and 438,705,708.02 is: 656,708,876.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,378,150.60 : 1,006,498,643.74 = 438,705,708.02 : x
  2. Step 2: Convert to fraction form
    672,378,150.60/1,006,498,643.74 = 438,705,708.02/x
  3. Step 3: Cross multiply
    672,378,150.60x = 1,006,498,643.74 × 438,705,708.02
  4. Step 4: Simplify right side
    672,378,150.60x = 441,556,700,123,126,400
  5. Step 5: Solve for x
    x = 441,556,700,123,126,400/672,378,150.60
  6. Step 6: Final answer
    x = 656,708,876.89

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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.