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Finding the Fourth Proportional to 571,775.75, 789,038.78 and 353,926.86

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Solution

The fourth proportional to 571,775.75, 789,038.78 and 353,926.86 is: 488,411.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,775.75 : 789,038.78 = 353,926.86 : x
  2. Step 2: Convert to fraction form
    571,775.75/789,038.78 = 353,926.86/x
  3. Step 3: Cross multiply
    571,775.75x = 789,038.78 × 353,926.86
  4. Step 4: Simplify right side
    571,775.75x = 279,262,017,823.63
  5. Step 5: Solve for x
    x = 279,262,017,823.63/571,775.75
  6. Step 6: Final answer
    x = 488,411.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.