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Finding the Fourth Proportional to 571,756.98, 789,030.78 and 317,124.56

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Solution

The fourth proportional to 571,756.98, 789,030.78 and 317,124.56 is: 437,635.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,756.98 : 789,030.78 = 317,124.56 : x
  2. Step 2: Convert to fraction form
    571,756.98/789,030.78 = 317,124.56/x
  3. Step 3: Cross multiply
    571,756.98x = 789,030.78 × 317,124.56
  4. Step 4: Simplify right side
    571,756.98x = 250,221,038,933.96
  5. Step 5: Solve for x
    x = 250,221,038,933.96/571,756.98
  6. Step 6: Final answer
    x = 437,635.30

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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.