Home / 421,475,691,479.07-632,138,804,679.30-191,689,203,470.82

Finding the Fourth Proportional to 421,475,691,479.07, 632,138,804,679.30 and 191,689,203,470.82

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Solution

The fourth proportional to 421,475,691,479.07, 632,138,804,679.30 and 191,689,203,470.82 is: 287,499,816,482.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,475,691,479.07 : 632,138,804,679.30 = 191,689,203,470.82 : x
  2. Step 2: Convert to fraction form
    421,475,691,479.07/632,138,804,679.30 = 191,689,203,470.82/x
  3. Step 3: Cross multiply
    421,475,691,479.07x = 632,138,804,679.30 × 191,689,203,470.82
  4. Step 4: Simplify right side
    421,475,691,479.07x = 121,174,183,951,971,288,875,008
  5. Step 5: Solve for x
    x = 121,174,183,951,971,288,875,008/421,475,691,479.07
  6. Step 6: Final answer
    x = 287,499,816,482.27

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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.