Home / 810,546.40-1,216,165.20-389,605.60

Finding the Fourth Proportional to 810,546.40, 1,216,165.20 and 389,605.60

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Solution

The fourth proportional to 810,546.40, 1,216,165.20 and 389,605.60 is: 584,574.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,546.40 : 1,216,165.20 = 389,605.60 : x
  2. Step 2: Convert to fraction form
    810,546.40/1,216,165.20 = 389,605.60/x
  3. Step 3: Cross multiply
    810,546.40x = 1,216,165.20 × 389,605.60
  4. Step 4: Simplify right side
    810,546.40x = 473,824,772,445.12
  5. Step 5: Solve for x
    x = 473,824,772,445.12/810,546.40
  6. Step 6: Final answer
    x = 584,574.52

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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.