Home / 429,814,307.30-643,233,426.15-257,414,846.90

Finding the Fourth Proportional to 429,814,307.30, 643,233,426.15 and 257,414,846.90

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Solution

The fourth proportional to 429,814,307.30, 643,233,426.15 and 257,414,846.90 is: 385,231,089.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,814,307.30 : 643,233,426.15 = 257,414,846.90 : x
  2. Step 2: Convert to fraction form
    429,814,307.30/643,233,426.15 = 257,414,846.90/x
  3. Step 3: Cross multiply
    429,814,307.30x = 643,233,426.15 × 257,414,846.90
  4. Step 4: Simplify right side
    429,814,307.30x = 165,577,833,913,364,704
  5. Step 5: Solve for x
    x = 165,577,833,913,364,704/429,814,307.30
  6. Step 6: Final answer
    x = 385,231,089.57

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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.