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Finding the Fourth Proportional to 666,861.86, 920,269.30 and 360,938.19

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Solution

The fourth proportional to 666,861.86, 920,269.30 and 360,938.19 is: 498,094.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,861.86 : 920,269.30 = 360,938.19 : x
  2. Step 2: Convert to fraction form
    666,861.86/920,269.30 = 360,938.19/x
  3. Step 3: Cross multiply
    666,861.86x = 920,269.30 × 360,938.19
  4. Step 4: Simplify right side
    666,861.86x = 332,160,329,048.53
  5. Step 5: Solve for x
    x = 332,160,329,048.53/666,861.86
  6. Step 6: Final answer
    x = 498,094.66

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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.