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Finding the Fourth Proportional to 645,546.56, 890,841.28 and 359,060.48

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Solution

The fourth proportional to 645,546.56, 890,841.28 and 359,060.48 is: 495,496.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,546.56 : 890,841.28 = 359,060.48 : x
  2. Step 2: Convert to fraction form
    645,546.56/890,841.28 = 359,060.48/x
  3. Step 3: Cross multiply
    645,546.56x = 890,841.28 × 359,060.48
  4. Step 4: Simplify right side
    645,546.56x = 319,865,897,600.61
  5. Step 5: Solve for x
    x = 319,865,897,600.61/645,546.56
  6. Step 6: Final answer
    x = 495,496.25

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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.