Home / 1,188,960.39-1,783,065.90-390,055.77

Finding the Fourth Proportional to 1,188,960.39, 1,783,065.90 and 390,055.77

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Solution

The fourth proportional to 1,188,960.39, 1,783,065.90 and 390,055.77 is: 584,960.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,960.39 : 1,783,065.90 = 390,055.77 : x
  2. Step 2: Convert to fraction form
    1,188,960.39/1,783,065.90 = 390,055.77/x
  3. Step 3: Cross multiply
    1,188,960.39x = 1,783,065.90 × 390,055.77
  4. Step 4: Simplify right side
    1,188,960.39x = 695,495,142,585.24
  5. Step 5: Solve for x
    x = 695,495,142,585.24/1,188,960.39
  6. Step 6: Final answer
    x = 584,960.73

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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.