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Finding the Fourth Proportional to 560,358.90, 773,291.61 and 318,641.49

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Solution

The fourth proportional to 560,358.90, 773,291.61 and 318,641.49 is: 439,723.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,358.90 : 773,291.61 = 318,641.49 : x
  2. Step 2: Convert to fraction form
    560,358.90/773,291.61 = 318,641.49/x
  3. Step 3: Cross multiply
    560,358.90x = 773,291.61 × 318,641.49
  4. Step 4: Simplify right side
    560,358.90x = 246,402,790,814.90
  5. Step 5: Solve for x
    x = 246,402,790,814.90/560,358.90
  6. Step 6: Final answer
    x = 439,723.17

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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.