Home / 579,938.40-869,896.62-238,309.20

Finding the Fourth Proportional to 579,938.40, 869,896.62 and 238,309.20

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Solution

The fourth proportional to 579,938.40, 869,896.62 and 238,309.20 is: 357,459.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,938.40 : 869,896.62 = 238,309.20 : x
  2. Step 2: Convert to fraction form
    579,938.40/869,896.62 = 238,309.20/x
  3. Step 3: Cross multiply
    579,938.40x = 869,896.62 × 238,309.20
  4. Step 4: Simplify right side
    579,938.40x = 207,304,367,594.90
  5. Step 5: Solve for x
    x = 207,304,367,594.90/579,938.40
  6. Step 6: Final answer
    x = 357,459.29

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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.