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Finding the Fourth Proportional to 655,359.86, 983,421.90 and 276,257.39

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Solution

The fourth proportional to 655,359.86, 983,421.90 and 276,257.39 is: 414,547.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,359.86 : 983,421.90 = 276,257.39 : x
  2. Step 2: Convert to fraction form
    655,359.86/983,421.90 = 276,257.39/x
  3. Step 3: Cross multiply
    655,359.86x = 983,421.90 × 276,257.39
  4. Step 4: Simplify right side
    655,359.86x = 271,677,562,445.73
  5. Step 5: Solve for x
    x = 271,677,562,445.73/655,359.86
  6. Step 6: Final answer
    x = 414,547.15

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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.