Home / 658,466.20-986,921.70-279,386.20

Finding the Fourth Proportional to 658,466.20, 986,921.70 and 279,386.20

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Solution

The fourth proportional to 658,466.20, 986,921.70 and 279,386.20 is: 418,749.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,466.20 : 986,921.70 = 279,386.20 : x
  2. Step 2: Convert to fraction form
    658,466.20/986,921.70 = 279,386.20/x
  3. Step 3: Cross multiply
    658,466.20x = 986,921.70 × 279,386.20
  4. Step 4: Simplify right side
    658,466.20x = 275,732,303,460.54
  5. Step 5: Solve for x
    x = 275,732,303,460.54/658,466.20
  6. Step 6: Final answer
    x = 418,749.37

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Double scale
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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.