Home / 911,880.15-1,258,550.86-530,128.36

Finding the Fourth Proportional to 911,880.15, 1,258,550.86 and 530,128.36

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Solution

The fourth proportional to 911,880.15, 1,258,550.86 and 530,128.36 is: 731,667.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,880.15 : 1,258,550.86 = 530,128.36 : x
  2. Step 2: Convert to fraction form
    911,880.15/1,258,550.86 = 530,128.36/x
  3. Step 3: Cross multiply
    911,880.15x = 1,258,550.86 × 530,128.36
  4. Step 4: Simplify right side
    911,880.15x = 667,193,503,388.39
  5. Step 5: Solve for x
    x = 667,193,503,388.39/911,880.15
  6. Step 6: Final answer
    x = 731,667.98

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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.