Home / 1,185,678.38-1,778,800.54-386,961.42

Finding the Fourth Proportional to 1,185,678.38, 1,778,800.54 and 386,961.42

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Solution

The fourth proportional to 1,185,678.38, 1,778,800.54 and 386,961.42 is: 580,534.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,678.38 : 1,778,800.54 = 386,961.42 : x
  2. Step 2: Convert to fraction form
    1,185,678.38/1,778,800.54 = 386,961.42/x
  3. Step 3: Cross multiply
    1,185,678.38x = 1,778,800.54 × 386,961.42
  4. Step 4: Simplify right side
    1,185,678.38x = 688,327,182,855.17
  5. Step 5: Solve for x
    x = 688,327,182,855.17/1,185,678.38
  6. Step 6: Final answer
    x = 580,534.48

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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.