Home / 821,966.40-1,133,654.40-515,764.80

Finding the Fourth Proportional to 821,966.40, 1,133,654.40 and 515,764.80

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Solution

The fourth proportional to 821,966.40, 1,133,654.40 and 515,764.80 is: 711,341.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,966.40 : 1,133,654.40 = 515,764.80 : x
  2. Step 2: Convert to fraction form
    821,966.40/1,133,654.40 = 515,764.80/x
  3. Step 3: Cross multiply
    821,966.40x = 1,133,654.40 × 515,764.80
  4. Step 4: Simplify right side
    821,966.40x = 584,699,034,885.12
  5. Step 5: Solve for x
    x = 584,699,034,885.12/821,966.40
  6. Step 6: Final answer
    x = 711,341.77

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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.