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Finding the Fourth Proportional to 656,152.76, 905,490.82 and 354,346.76

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Solution

The fourth proportional to 656,152.76, 905,490.82 and 354,346.76 is: 488,998.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,152.76 : 905,490.82 = 354,346.76 : x
  2. Step 2: Convert to fraction form
    656,152.76/905,490.82 = 354,346.76/x
  3. Step 3: Cross multiply
    656,152.76x = 905,490.82 × 354,346.76
  4. Step 4: Simplify right side
    656,152.76x = 320,857,738,276.74
  5. Step 5: Solve for x
    x = 320,857,738,276.74/656,152.76
  6. Step 6: Final answer
    x = 488,998.53

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Double scale
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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.