Home / 1,155,009.80-1,732,514.70-313,665.80

Finding the Fourth Proportional to 1,155,009.80, 1,732,514.70 and 313,665.80

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Solution

The fourth proportional to 1,155,009.80, 1,732,514.70 and 313,665.80 is: 470,498.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155,009.80 : 1,732,514.70 = 313,665.80 : x
  2. Step 2: Convert to fraction form
    1,155,009.80/1,732,514.70 = 313,665.80/x
  3. Step 3: Cross multiply
    1,155,009.80x = 1,732,514.70 × 313,665.80
  4. Step 4: Simplify right side
    1,155,009.80x = 543,430,609,387.26
  5. Step 5: Solve for x
    x = 543,430,609,387.26/1,155,009.80
  6. Step 6: Final answer
    x = 470,498.70

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Double scale
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Similar ratio
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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.