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Finding the Fourth Proportional to 660,673.56, 910,861.92 and 476,757.78

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Solution

The fourth proportional to 660,673.56, 910,861.92 and 476,757.78 is: 657,299.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,673.56 : 910,861.92 = 476,757.78 : x
  2. Step 2: Convert to fraction form
    660,673.56/910,861.92 = 476,757.78/x
  3. Step 3: Cross multiply
    660,673.56x = 910,861.92 × 476,757.78
  4. Step 4: Simplify right side
    660,673.56x = 434,260,506,865.74
  5. Step 5: Solve for x
    x = 434,260,506,865.74/660,673.56
  6. Step 6: Final answer
    x = 657,299.66

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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.