Home / 919,507.71-1,268,809.20-511,513.14

Finding the Fourth Proportional to 919,507.71, 1,268,809.20 and 511,513.14

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Solution

The fourth proportional to 919,507.71, 1,268,809.20 and 511,513.14 is: 705,826.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,507.71 : 1,268,809.20 = 511,513.14 : x
  2. Step 2: Convert to fraction form
    919,507.71/1,268,809.20 = 511,513.14/x
  3. Step 3: Cross multiply
    919,507.71x = 1,268,809.20 × 511,513.14
  4. Step 4: Simplify right side
    919,507.71x = 649,012,577,952.89
  5. Step 5: Solve for x
    x = 649,012,577,952.89/919,507.71
  6. Step 6: Final answer
    x = 705,826.14

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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.