Home / 429,814,342.80-643,233,479.40-257,414,882.40

Finding the Fourth Proportional to 429,814,342.80, 643,233,479.40 and 257,414,882.40

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Solution

The fourth proportional to 429,814,342.80, 643,233,479.40 and 257,414,882.40 is: 385,231,142.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,814,342.80 : 643,233,479.40 = 257,414,882.40 : x
  2. Step 2: Convert to fraction form
    429,814,342.80/643,233,479.40 = 257,414,882.40/x
  3. Step 3: Cross multiply
    429,814,342.80x = 643,233,479.40 × 257,414,882.40
  4. Step 4: Simplify right side
    429,814,342.80x = 165,577,870,455,493,824
  5. Step 5: Solve for x
    x = 165,577,870,455,493,824/429,814,342.80
  6. Step 6: Final answer
    x = 385,231,142.77

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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.