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Finding the Fourth Proportional to 660,926.86, 912,084.58 and 359,120.86

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Solution

The fourth proportional to 660,926.86, 912,084.58 and 359,120.86 is: 495,589.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,926.86 : 912,084.58 = 359,120.86 : x
  2. Step 2: Convert to fraction form
    660,926.86/912,084.58 = 359,120.86/x
  3. Step 3: Cross multiply
    660,926.86x = 912,084.58 × 359,120.86
  4. Step 4: Simplify right side
    660,926.86x = 327,548,598,762.34
  5. Step 5: Solve for x
    x = 327,548,598,762.34/660,926.86
  6. Step 6: Final answer
    x = 495,589.78

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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.