Home / 780,662.09-1,170,132.31-510,678.16

Finding the Fourth Proportional to 780,662.09, 1,170,132.31 and 510,678.16

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Solution

The fourth proportional to 780,662.09, 1,170,132.31 and 510,678.16 is: 765,454.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,662.09 : 1,170,132.31 = 510,678.16 : x
  2. Step 2: Convert to fraction form
    780,662.09/1,170,132.31 = 510,678.16/x
  3. Step 3: Cross multiply
    780,662.09x = 1,170,132.31 × 510,678.16
  4. Step 4: Simplify right side
    780,662.09x = 597,561,012,740.37
  5. Step 5: Solve for x
    x = 597,561,012,740.37/780,662.09
  6. Step 6: Final answer
    x = 765,454.12

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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.