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Finding the Fourth Proportional to 553,375.20, 830,062.80 and 488,056.80

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Solution

The fourth proportional to 553,375.20, 830,062.80 and 488,056.80 is: 732,085.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,375.20 : 830,062.80 = 488,056.80 : x
  2. Step 2: Convert to fraction form
    553,375.20/830,062.80 = 488,056.80/x
  3. Step 3: Cross multiply
    553,375.20x = 830,062.80 × 488,056.80
  4. Step 4: Simplify right side
    553,375.20x = 405,117,793,967.04
  5. Step 5: Solve for x
    x = 405,117,793,967.04/553,375.20
  6. Step 6: Final answer
    x = 732,085.20

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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.