Home / 591,899.72-816,820.54-319,967.78

Finding the Fourth Proportional to 591,899.72, 816,820.54 and 319,967.78

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Solution

The fourth proportional to 591,899.72, 816,820.54 and 319,967.78 is: 441,554.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,899.72 : 816,820.54 = 319,967.78 : x
  2. Step 2: Convert to fraction form
    591,899.72/816,820.54 = 319,967.78/x
  3. Step 3: Cross multiply
    591,899.72x = 816,820.54 × 319,967.78
  4. Step 4: Simplify right side
    591,899.72x = 261,356,249,958.18
  5. Step 5: Solve for x
    x = 261,356,249,958.18/591,899.72
  6. Step 6: Final answer
    x = 441,554.95

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1.5x scale

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.