Home / 429,907,967.13-643,916,723.22-355,286,039.97

Finding the Fourth Proportional to 429,907,967.13, 643,916,723.22 and 355,286,039.97

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Solution

The fourth proportional to 429,907,967.13, 643,916,723.22 and 355,286,039.97 is: 532,147,901.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,907,967.13 : 643,916,723.22 = 355,286,039.97 : x
  2. Step 2: Convert to fraction form
    429,907,967.13/643,916,723.22 = 355,286,039.97/x
  3. Step 3: Cross multiply
    429,907,967.13x = 643,916,723.22 × 355,286,039.97
  4. Step 4: Simplify right side
    429,907,967.13x = 228,774,622,663,292,384
  5. Step 5: Solve for x
    x = 228,774,622,663,292,384/429,907,967.13
  6. Step 6: Final answer
    x = 532,147,901.77

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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.