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Finding the Fourth Proportional to 660,964.82, 912,057.42 and 374,423.54

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Solution

The fourth proportional to 660,964.82, 912,057.42 and 374,423.54 is: 516,662.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,964.82 : 912,057.42 = 374,423.54 : x
  2. Step 2: Convert to fraction form
    660,964.82/912,057.42 = 374,423.54/x
  3. Step 3: Cross multiply
    660,964.82x = 912,057.42 × 374,423.54
  4. Step 4: Simplify right side
    660,964.82x = 341,495,767,879.67
  5. Step 5: Solve for x
    x = 341,495,767,879.67/660,964.82
  6. Step 6: Final answer
    x = 516,662.55

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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.