Home / 511,295.40-766,943.10-290,111.40

Finding the Fourth Proportional to 511,295.40, 766,943.10 and 290,111.40

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Solution

The fourth proportional to 511,295.40, 766,943.10 and 290,111.40 is: 435,167.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,295.40 : 766,943.10 = 290,111.40 : x
  2. Step 2: Convert to fraction form
    511,295.40/766,943.10 = 290,111.40/x
  3. Step 3: Cross multiply
    511,295.40x = 766,943.10 × 290,111.40
  4. Step 4: Simplify right side
    511,295.40x = 222,498,936,461.34
  5. Step 5: Solve for x
    x = 222,498,936,461.34/511,295.40
  6. Step 6: Final answer
    x = 435,167.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.