Home / 911,998.60-1,258,384.82-572,313.76

Finding the Fourth Proportional to 911,998.60, 1,258,384.82 and 572,313.76

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Solution

The fourth proportional to 911,998.60, 1,258,384.82 and 572,313.76 is: 789,684.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,998.60 : 1,258,384.82 = 572,313.76 : x
  2. Step 2: Convert to fraction form
    911,998.60/1,258,384.82 = 572,313.76/x
  3. Step 3: Cross multiply
    911,998.60x = 1,258,384.82 × 572,313.76
  4. Step 4: Simplify right side
    911,998.60x = 720,190,947,861.12
  5. Step 5: Solve for x
    x = 720,190,947,861.12/911,998.60
  6. Step 6: Final answer
    x = 789,684.27

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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.