Home / 1,300,128.30-1,950,192.45-985,200.30

Finding the Fourth Proportional to 1,300,128.30, 1,950,192.45 and 985,200.30

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Solution

The fourth proportional to 1,300,128.30, 1,950,192.45 and 985,200.30 is: 1,477,800.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,300,128.30 : 1,950,192.45 = 985,200.30 : x
  2. Step 2: Convert to fraction form
    1,300,128.30/1,950,192.45 = 985,200.30/x
  3. Step 3: Cross multiply
    1,300,128.30x = 1,950,192.45 × 985,200.30
  4. Step 4: Simplify right side
    1,300,128.30x = 1,921,330,186,797.74
  5. Step 5: Solve for x
    x = 1,921,330,186,797.74/1,300,128.30
  6. Step 6: Final answer
    x = 1,477,800.45

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Double scale
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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.