Home / 672,959.20-928,784.44-431,514.40

Finding the Fourth Proportional to 672,959.20, 928,784.44 and 431,514.40

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Solution

The fourth proportional to 672,959.20, 928,784.44 and 431,514.40 is: 595,554.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,959.20 : 928,784.44 = 431,514.40 : x
  2. Step 2: Convert to fraction form
    672,959.20/928,784.44 = 431,514.40/x
  3. Step 3: Cross multiply
    672,959.20x = 928,784.44 × 431,514.40
  4. Step 4: Simplify right side
    672,959.20x = 400,783,860,355.94
  5. Step 5: Solve for x
    x = 400,783,860,355.94/672,959.20
  6. Step 6: Final answer
    x = 595,554.47

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Double scale
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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.