Home / 780,801.40-1,171,331.70-307,502.20

Finding the Fourth Proportional to 780,801.40, 1,171,331.70 and 307,502.20

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Solution

The fourth proportional to 780,801.40, 1,171,331.70 and 307,502.20 is: 461,304.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,801.40 : 1,171,331.70 = 307,502.20 : x
  2. Step 2: Convert to fraction form
    780,801.40/1,171,331.70 = 307,502.20/x
  3. Step 3: Cross multiply
    780,801.40x = 1,171,331.70 × 307,502.20
  4. Step 4: Simplify right side
    780,801.40x = 360,187,074,679.74
  5. Step 5: Solve for x
    x = 360,187,074,679.74/780,801.40
  6. Step 6: Final answer
    x = 461,304.34

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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.