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Finding the Fourth Proportional to 661,296, 912,586.32 and 359,487.84

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Solution

The fourth proportional to 661,296, 912,586.32 and 359,487.84 is: 496,092.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,296 : 912,586.32 = 359,487.84 : x
  2. Step 2: Convert to fraction form
    661,296/912,586.32 = 359,487.84/x
  3. Step 3: Cross multiply
    661,296x = 912,586.32 × 359,487.84
  4. Step 4: Simplify right side
    661,296x = 328,063,684,990.35
  5. Step 5: Solve for x
    x = 328,063,684,990.35/661,296
  6. Step 6: Final answer
    x = 496,092.05

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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.