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Finding the Fourth Proportional to 577,970.40, 866,955.60 and 479,992.80

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Solution

The fourth proportional to 577,970.40, 866,955.60 and 479,992.80 is: 719,989.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,970.40 : 866,955.60 = 479,992.80 : x
  2. Step 2: Convert to fraction form
    577,970.40/866,955.60 = 479,992.80/x
  3. Step 3: Cross multiply
    577,970.40x = 866,955.60 × 479,992.80
  4. Step 4: Simplify right side
    577,970.40x = 416,132,445,919.68
  5. Step 5: Solve for x
    x = 416,132,445,919.68/577,970.40
  6. Step 6: Final answer
    x = 719,989.20

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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.