Home / 913,908.52-1,261,210.50-511,499.56

Finding the Fourth Proportional to 913,908.52, 1,261,210.50 and 511,499.56

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Solution

The fourth proportional to 913,908.52, 1,261,210.50 and 511,499.56 is: 705,878.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,908.52 : 1,261,210.50 = 511,499.56 : x
  2. Step 2: Convert to fraction form
    913,908.52/1,261,210.50 = 511,499.56/x
  3. Step 3: Cross multiply
    913,908.52x = 1,261,210.50 × 511,499.56
  4. Step 4: Simplify right side
    913,908.52x = 645,108,615,817.38
  5. Step 5: Solve for x
    x = 645,108,615,817.38/913,908.52
  6. Step 6: Final answer
    x = 705,878.76

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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.