Home / 643,322,088,460.40-964,983,132,690.60-219,329,105,298.80

Finding the Fourth Proportional to 643,322,088,460.40, 964,983,132,690.60 and 219,329,105,298.80

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Solution

The fourth proportional to 643,322,088,460.40, 964,983,132,690.60 and 219,329,105,298.80 is: 328,993,657,948.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,322,088,460.40 : 964,983,132,690.60 = 219,329,105,298.80 : x
  2. Step 2: Convert to fraction form
    643,322,088,460.40/964,983,132,690.60 = 219,329,105,298.80/x
  3. Step 3: Cross multiply
    643,322,088,460.40x = 964,983,132,690.60 × 219,329,105,298.80
  4. Step 4: Simplify right side
    643,322,088,460.40x = 211,648,887,121,462,467,493,888
  5. Step 5: Solve for x
    x = 211,648,887,121,462,467,493,888/643,322,088,460.40
  6. Step 6: Final answer
    x = 328,993,657,948.20

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Double scale
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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.