Home / 1,178,709.80-1,768,064.70-390,741.80

Finding the Fourth Proportional to 1,178,709.80, 1,768,064.70 and 390,741.80

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Solution

The fourth proportional to 1,178,709.80, 1,768,064.70 and 390,741.80 is: 586,112.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,709.80 : 1,768,064.70 = 390,741.80 : x
  2. Step 2: Convert to fraction form
    1,178,709.80/1,768,064.70 = 390,741.80/x
  3. Step 3: Cross multiply
    1,178,709.80x = 1,768,064.70 × 390,741.80
  4. Step 4: Simplify right side
    1,178,709.80x = 690,856,783,394.46
  5. Step 5: Solve for x
    x = 690,856,783,394.46/1,178,709.80
  6. Step 6: Final answer
    x = 586,112.70

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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.