Home / 891,708.40-1,230,557.48-509,743.76

Finding the Fourth Proportional to 891,708.40, 1,230,557.48 and 509,743.76

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Solution

The fourth proportional to 891,708.40, 1,230,557.48 and 509,743.76 is: 703,446.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,708.40 : 1,230,557.48 = 509,743.76 : x
  2. Step 2: Convert to fraction form
    891,708.40/1,230,557.48 = 509,743.76/x
  3. Step 3: Cross multiply
    891,708.40x = 1,230,557.48 × 509,743.76
  4. Step 4: Simplify right side
    891,708.40x = 627,268,996,751.33
  5. Step 5: Solve for x
    x = 627,268,996,751.33/891,708.40
  6. Step 6: Final answer
    x = 703,446.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.