Home / 412,009.18-616,307.60-386,814.94

Finding the Fourth Proportional to 412,009.18, 616,307.60 and 386,814.94

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Solution

The fourth proportional to 412,009.18, 616,307.60 and 386,814.94 is: 578,620.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,009.18 : 616,307.60 = 386,814.94 : x
  2. Step 2: Convert to fraction form
    412,009.18/616,307.60 = 386,814.94/x
  3. Step 3: Cross multiply
    412,009.18x = 616,307.60 × 386,814.94
  4. Step 4: Simplify right side
    412,009.18x = 238,396,986,741.81
  5. Step 5: Solve for x
    x = 238,396,986,741.81/412,009.18
  6. Step 6: Final answer
    x = 578,620.57

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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.