Home / 812,034.72-1,120,722.48-472,612.32

Finding the Fourth Proportional to 812,034.72, 1,120,722.48 and 472,612.32

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Solution

The fourth proportional to 812,034.72, 1,120,722.48 and 472,612.32 is: 652,271.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,034.72 : 1,120,722.48 = 472,612.32 : x
  2. Step 2: Convert to fraction form
    812,034.72/1,120,722.48 = 472,612.32/x
  3. Step 3: Cross multiply
    812,034.72x = 1,120,722.48 × 472,612.32
  4. Step 4: Simplify right side
    812,034.72x = 529,667,251,348.95
  5. Step 5: Solve for x
    x = 529,667,251,348.95/812,034.72
  6. Step 6: Final answer
    x = 652,271.68

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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.