Home / 809,210.80-1,215,128.40-586,136.80

Finding the Fourth Proportional to 809,210.80, 1,215,128.40 and 586,136.80

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Solution

The fourth proportional to 809,210.80, 1,215,128.40 and 586,136.80 is: 880,155.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,210.80 : 1,215,128.40 = 586,136.80 : x
  2. Step 2: Convert to fraction form
    809,210.80/1,215,128.40 = 586,136.80/x
  3. Step 3: Cross multiply
    809,210.80x = 1,215,128.40 × 586,136.80
  4. Step 4: Simplify right side
    809,210.80x = 712,231,471,965.12
  5. Step 5: Solve for x
    x = 712,231,471,965.12/809,210.80
  6. Step 6: Final answer
    x = 880,155.67

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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.