Home / 873,336.40-1,309,212.60-312,240.40

Finding the Fourth Proportional to 873,336.40, 1,309,212.60 and 312,240.40

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Solution

The fourth proportional to 873,336.40, 1,309,212.60 and 312,240.40 is: 468,077.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,336.40 : 1,309,212.60 = 312,240.40 : x
  2. Step 2: Convert to fraction form
    873,336.40/1,309,212.60 = 312,240.40/x
  3. Step 3: Cross multiply
    873,336.40x = 1,309,212.60 × 312,240.40
  4. Step 4: Simplify right side
    873,336.40x = 408,789,065,909.04
  5. Step 5: Solve for x
    x = 408,789,065,909.04/873,336.40
  6. Step 6: Final answer
    x = 468,077.44

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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.