Home / 812,586.34-1,121,555.78-540,665.70

Finding the Fourth Proportional to 812,586.34, 1,121,555.78 and 540,665.70

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Solution

The fourth proportional to 812,586.34, 1,121,555.78 and 540,665.70 is: 746,242.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,586.34 : 1,121,555.78 = 540,665.70 : x
  2. Step 2: Convert to fraction form
    812,586.34/1,121,555.78 = 540,665.70/x
  3. Step 3: Cross multiply
    812,586.34x = 1,121,555.78 × 540,665.70
  4. Step 4: Simplify right side
    812,586.34x = 606,386,740,882.75
  5. Step 5: Solve for x
    x = 606,386,740,882.75/812,586.34
  6. Step 6: Final answer
    x = 746,242.84

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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.