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Finding the Fourth Proportional to 557,479.80, 768,560.40 and 383,044.68

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Solution

The fourth proportional to 557,479.80, 768,560.40 and 383,044.68 is: 528,078.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,479.80 : 768,560.40 = 383,044.68 : x
  2. Step 2: Convert to fraction form
    557,479.80/768,560.40 = 383,044.68/x
  3. Step 3: Cross multiply
    557,479.80x = 768,560.40 × 383,044.68
  4. Step 4: Simplify right side
    557,479.80x = 294,392,972,478.67
  5. Step 5: Solve for x
    x = 294,392,972,478.67/557,479.80
  6. Step 6: Final answer
    x = 528,078.28

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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.