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Finding the Fourth Proportional to 887,688.60, 1,330,876.80 and 488,779.80

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Solution

The fourth proportional to 887,688.60, 1,330,876.80 and 488,779.80 is: 732,808.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,688.60 : 1,330,876.80 = 488,779.80 : x
  2. Step 2: Convert to fraction form
    887,688.60/1,330,876.80 = 488,779.80/x
  3. Step 3: Cross multiply
    887,688.60x = 1,330,876.80 × 488,779.80
  4. Step 4: Simplify right side
    887,688.60x = 650,505,696,128.64
  5. Step 5: Solve for x
    x = 650,505,696,128.64/887,688.60
  6. Step 6: Final answer
    x = 732,808.44

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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.