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Finding the Fourth Proportional to 656,920.46, 906,551.56 and 355,114.46

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Solution

The fourth proportional to 656,920.46, 906,551.56 and 355,114.46 is: 490,058.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,920.46 : 906,551.56 = 355,114.46 : x
  2. Step 2: Convert to fraction form
    656,920.46/906,551.56 = 355,114.46/x
  3. Step 3: Cross multiply
    656,920.46x = 906,551.56 × 355,114.46
  4. Step 4: Simplify right side
    656,920.46x = 321,929,567,691.56
  5. Step 5: Solve for x
    x = 321,929,567,691.56/656,920.46
  6. Step 6: Final answer
    x = 490,058.67

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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.