Home / 780,061.65-1,170,092.48-654,090.45

Finding the Fourth Proportional to 780,061.65, 1,170,092.48 and 654,090.45

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Solution

The fourth proportional to 780,061.65, 1,170,092.48 and 654,090.45 is: 981,135.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,061.65 : 1,170,092.48 = 654,090.45 : x
  2. Step 2: Convert to fraction form
    780,061.65/1,170,092.48 = 654,090.45/x
  3. Step 3: Cross multiply
    780,061.65x = 1,170,092.48 × 654,090.45
  4. Step 4: Simplify right side
    780,061.65x = 765,346,313,514.36
  5. Step 5: Solve for x
    x = 765,346,313,514.36/780,061.65
  6. Step 6: Final answer
    x = 981,135.68

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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.