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Finding the Fourth Proportional to 656,610.40, 906,128.40 and 370,105.12

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Solution

The fourth proportional to 656,610.40, 906,128.40 and 370,105.12 is: 510,748.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,610.40 : 906,128.40 = 370,105.12 : x
  2. Step 2: Convert to fraction form
    656,610.40/906,128.40 = 370,105.12/x
  3. Step 3: Cross multiply
    656,610.40x = 906,128.40 × 370,105.12
  4. Step 4: Simplify right side
    656,610.40x = 335,362,760,217.41
  5. Step 5: Solve for x
    x = 335,362,760,217.41/656,610.40
  6. Step 6: Final answer
    x = 510,748.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.