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Finding the Fourth Proportional to 610,722.40, 915,646.20 and 255,553.60

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Solution

The fourth proportional to 610,722.40, 915,646.20 and 255,553.60 is: 383,147.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,722.40 : 915,646.20 = 255,553.60 : x
  2. Step 2: Convert to fraction form
    610,722.40/915,646.20 = 255,553.60/x
  3. Step 3: Cross multiply
    610,722.40x = 915,646.20 × 255,553.60
  4. Step 4: Simplify right side
    610,722.40x = 233,996,682,736.32
  5. Step 5: Solve for x
    x = 233,996,682,736.32/610,722.40
  6. Step 6: Final answer
    x = 383,147.37

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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.