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Finding the Fourth Proportional to 557,044.08, 768,920.56 and 330,689.76

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Solution

The fourth proportional to 557,044.08, 768,920.56 and 330,689.76 is: 456,470.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,044.08 : 768,920.56 = 330,689.76 : x
  2. Step 2: Convert to fraction form
    557,044.08/768,920.56 = 330,689.76/x
  3. Step 3: Cross multiply
    557,044.08x = 768,920.56 × 330,689.76
  4. Step 4: Simplify right side
    557,044.08x = 254,274,155,445.47
  5. Step 5: Solve for x
    x = 254,274,155,445.47/557,044.08
  6. Step 6: Final answer
    x = 456,470.44

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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.