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Finding the Fourth Proportional to 560,720.65, 773,767.47 and 318,980.47

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Solution

The fourth proportional to 560,720.65, 773,767.47 and 318,980.47 is: 440,177.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,720.65 : 773,767.47 = 318,980.47 : x
  2. Step 2: Convert to fraction form
    560,720.65/773,767.47 = 318,980.47/x
  3. Step 3: Cross multiply
    560,720.65x = 773,767.47 × 318,980.47
  4. Step 4: Simplify right side
    560,720.65x = 246,816,711,251.31
  5. Step 5: Solve for x
    x = 246,816,711,251.31/560,720.65
  6. Step 6: Final answer
    x = 440,177.67

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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.