Home / 1,188,939.75-1,783,035-390,035.13

Finding the Fourth Proportional to 1,188,939.75, 1,783,035 and 390,035.13

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Solution

The fourth proportional to 1,188,939.75, 1,783,035 and 390,035.13 is: 584,929.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,939.75 : 1,783,035 = 390,035.13 : x
  2. Step 2: Convert to fraction form
    1,188,939.75/1,783,035 = 390,035.13/x
  3. Step 3: Cross multiply
    1,188,939.75x = 1,783,035 × 390,035.13
  4. Step 4: Simplify right side
    1,188,939.75x = 695,446,288,019.55
  5. Step 5: Solve for x
    x = 695,446,288,019.55/1,188,939.75
  6. Step 6: Final answer
    x = 584,929.80

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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.