Home / 780,058.80-1,170,088.20-654,087.60

Finding the Fourth Proportional to 780,058.80, 1,170,088.20 and 654,087.60

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Solution

The fourth proportional to 780,058.80, 1,170,088.20 and 654,087.60 is: 981,131.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,058.80 : 1,170,088.20 = 654,087.60 : x
  2. Step 2: Convert to fraction form
    780,058.80/1,170,088.20 = 654,087.60/x
  3. Step 3: Cross multiply
    780,058.80x = 1,170,088.20 × 654,087.60
  4. Step 4: Simplify right side
    780,058.80x = 765,340,182,526.32
  5. Step 5: Solve for x
    x = 765,340,182,526.32/780,058.80
  6. Step 6: Final answer
    x = 981,131.40

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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.