Home / 782,178.19-1,079,421.23-510,419.95

Finding the Fourth Proportional to 782,178.19, 1,079,421.23 and 510,419.95

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Solution

The fourth proportional to 782,178.19, 1,079,421.23 and 510,419.95 is: 704,389.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,178.19 : 1,079,421.23 = 510,419.95 : x
  2. Step 2: Convert to fraction form
    782,178.19/1,079,421.23 = 510,419.95/x
  3. Step 3: Cross multiply
    782,178.19x = 1,079,421.23 × 510,419.95
  4. Step 4: Simplify right side
    782,178.19x = 550,958,127,693.44
  5. Step 5: Solve for x
    x = 550,958,127,693.44/782,178.19
  6. Step 6: Final answer
    x = 704,389.53

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Double scale
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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.