Home / 839,423.40-1,158,404.40-457,450.20

Finding the Fourth Proportional to 839,423.40, 1,158,404.40 and 457,450.20

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Solution

The fourth proportional to 839,423.40, 1,158,404.40 and 457,450.20 is: 631,281.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,423.40 : 1,158,404.40 = 457,450.20 : x
  2. Step 2: Convert to fraction form
    839,423.40/1,158,404.40 = 457,450.20/x
  3. Step 3: Cross multiply
    839,423.40x = 1,158,404.40 × 457,450.20
  4. Step 4: Simplify right side
    839,423.40x = 529,912,324,460.88
  5. Step 5: Solve for x
    x = 529,912,324,460.88/839,423.40
  6. Step 6: Final answer
    x = 631,281.33

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.