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Finding the Fourth Proportional to 613,640.40, 920,460.60 and 568,021.20

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Solution

The fourth proportional to 613,640.40, 920,460.60 and 568,021.20 is: 852,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,640.40 : 920,460.60 = 568,021.20 : x
  2. Step 2: Convert to fraction form
    613,640.40/920,460.60 = 568,021.20/x
  3. Step 3: Cross multiply
    613,640.40x = 920,460.60 × 568,021.20
  4. Step 4: Simplify right side
    613,640.40x = 522,841,134,564.72
  5. Step 5: Solve for x
    x = 522,841,134,564.72/613,640.40
  6. Step 6: Final answer
    x = 852,031.80

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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.