Home / 1,138,186.74-1,707,411.34-380,128.80

Finding the Fourth Proportional to 1,138,186.74, 1,707,411.34 and 380,128.80

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Solution

The fourth proportional to 1,138,186.74, 1,707,411.34 and 380,128.80 is: 570,237.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,186.74 : 1,707,411.34 = 380,128.80 : x
  2. Step 2: Convert to fraction form
    1,138,186.74/1,707,411.34 = 380,128.80/x
  3. Step 3: Cross multiply
    1,138,186.74x = 1,707,411.34 × 380,128.80
  4. Step 4: Simplify right side
    1,138,186.74x = 649,036,223,780.59
  5. Step 5: Solve for x
    x = 649,036,223,780.59/1,138,186.74
  6. Step 6: Final answer
    x = 570,237.03

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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.