Home / 442,947.08-611,054.35-289,917.90

Finding the Fourth Proportional to 442,947.08, 611,054.35 and 289,917.90

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Solution

The fourth proportional to 442,947.08, 611,054.35 and 289,917.90 is: 399,947.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,947.08 : 611,054.35 = 289,917.90 : x
  2. Step 2: Convert to fraction form
    442,947.08/611,054.35 = 289,917.90/x
  3. Step 3: Cross multiply
    442,947.08x = 611,054.35 × 289,917.90
  4. Step 4: Simplify right side
    442,947.08x = 177,155,593,937.87
  5. Step 5: Solve for x
    x = 177,155,593,937.87/442,947.08
  6. Step 6: Final answer
    x = 399,947.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.