Home / 1,377,397.80-2,066,096.70-431,058.60

Finding the Fourth Proportional to 1,377,397.80, 2,066,096.70 and 431,058.60

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Solution

The fourth proportional to 1,377,397.80, 2,066,096.70 and 431,058.60 is: 646,587.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377,397.80 : 2,066,096.70 = 431,058.60 : x
  2. Step 2: Convert to fraction form
    1,377,397.80/2,066,096.70 = 431,058.60/x
  3. Step 3: Cross multiply
    1,377,397.80x = 2,066,096.70 × 431,058.60
  4. Step 4: Simplify right side
    1,377,397.80x = 890,608,750,966.62
  5. Step 5: Solve for x
    x = 890,608,750,966.62/1,377,397.80
  6. Step 6: Final answer
    x = 646,587.90

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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.