Home / 1,178,868.60-1,768,647.90-380,133.96

Finding the Fourth Proportional to 1,178,868.60, 1,768,647.90 and 380,133.96

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Solution

The fourth proportional to 1,178,868.60, 1,768,647.90 and 380,133.96 is: 570,312.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,868.60 : 1,768,647.90 = 380,133.96 : x
  2. Step 2: Convert to fraction form
    1,178,868.60/1,768,647.90 = 380,133.96/x
  3. Step 3: Cross multiply
    1,178,868.60x = 1,768,647.90 × 380,133.96
  4. Step 4: Simplify right side
    1,178,868.60x = 672,323,130,072.68
  5. Step 5: Solve for x
    x = 672,323,130,072.68/1,178,868.60
  6. Step 6: Final answer
    x = 570,312.19

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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.