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Finding the Fourth Proportional to 560,357.15, 773,289.15 and 318,639.74

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Solution

The fourth proportional to 560,357.15, 773,289.15 and 318,639.74 is: 439,720.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,357.15 : 773,289.15 = 318,639.74 : x
  2. Step 2: Convert to fraction form
    560,357.15/773,289.15 = 318,639.74/x
  3. Step 3: Cross multiply
    560,357.15x = 773,289.15 × 318,639.74
  4. Step 4: Simplify right side
    560,357.15x = 246,400,653,700.82
  5. Step 5: Solve for x
    x = 246,400,653,700.82/560,357.15
  6. Step 6: Final answer
    x = 439,720.73

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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.