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Finding the Fourth Proportional to 556,279.40, 836,168.70 and 545,781.80

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Solution

The fourth proportional to 556,279.40, 836,168.70 and 545,781.80 is: 820,389.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,279.40 : 836,168.70 = 545,781.80 : x
  2. Step 2: Convert to fraction form
    556,279.40/836,168.70 = 545,781.80/x
  3. Step 3: Cross multiply
    556,279.40x = 836,168.70 × 545,781.80
  4. Step 4: Simplify right side
    556,279.40x = 456,365,658,189.66
  5. Step 5: Solve for x
    x = 456,365,658,189.66/556,279.40
  6. Step 6: Final answer
    x = 820,389.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.