Home / 839,132.40-1,258,698.60-278,166.90

Finding the Fourth Proportional to 839,132.40, 1,258,698.60 and 278,166.90

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Solution

The fourth proportional to 839,132.40, 1,258,698.60 and 278,166.90 is: 417,250.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,132.40 : 1,258,698.60 = 278,166.90 : x
  2. Step 2: Convert to fraction form
    839,132.40/1,258,698.60 = 278,166.90/x
  3. Step 3: Cross multiply
    839,132.40x = 1,258,698.60 × 278,166.90
  4. Step 4: Simplify right side
    839,132.40x = 350,128,287,596.34
  5. Step 5: Solve for x
    x = 350,128,287,596.34/839,132.40
  6. Step 6: Final answer
    x = 417,250.35

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Half scale
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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.