Home / 809,534.40-1,214,301.60-389,630.40

Finding the Fourth Proportional to 809,534.40, 1,214,301.60 and 389,630.40

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Solution

The fourth proportional to 809,534.40, 1,214,301.60 and 389,630.40 is: 584,445.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,534.40 : 1,214,301.60 = 389,630.40 : x
  2. Step 2: Convert to fraction form
    809,534.40/1,214,301.60 = 389,630.40/x
  3. Step 3: Cross multiply
    809,534.40x = 1,214,301.60 × 389,630.40
  4. Step 4: Simplify right side
    809,534.40x = 473,128,818,128.64
  5. Step 5: Solve for x
    x = 473,128,818,128.64/809,534.40
  6. Step 6: Final answer
    x = 584,445.60

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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.