Home / 511,511.07-705,923.79-296,649.21

Finding the Fourth Proportional to 511,511.07, 705,923.79 and 296,649.21

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Solution

The fourth proportional to 511,511.07, 705,923.79 and 296,649.21 is: 409,398.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,511.07 : 705,923.79 = 296,649.21 : x
  2. Step 2: Convert to fraction form
    511,511.07/705,923.79 = 296,649.21/x
  3. Step 3: Cross multiply
    511,511.07x = 705,923.79 × 296,649.21
  4. Step 4: Simplify right side
    511,511.07x = 209,411,734,623.71
  5. Step 5: Solve for x
    x = 209,411,734,623.71/511,511.07
  6. Step 6: Final answer
    x = 409,398.25

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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.