Home / 1,188,005.10-1,782,007.65-289,439.70

Finding the Fourth Proportional to 1,188,005.10, 1,782,007.65 and 289,439.70

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Solution

The fourth proportional to 1,188,005.10, 1,782,007.65 and 289,439.70 is: 434,159.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,005.10 : 1,782,007.65 = 289,439.70 : x
  2. Step 2: Convert to fraction form
    1,188,005.10/1,782,007.65 = 289,439.70/x
  3. Step 3: Cross multiply
    1,188,005.10x = 1,782,007.65 × 289,439.70
  4. Step 4: Simplify right side
    1,188,005.10x = 515,783,759,613.71
  5. Step 5: Solve for x
    x = 515,783,759,613.71/1,188,005.10
  6. Step 6: Final answer
    x = 434,159.55

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1.5x scale

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.