Home / 839,124.60-1,258,686.90-240,105.30

Finding the Fourth Proportional to 839,124.60, 1,258,686.90 and 240,105.30

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Solution

The fourth proportional to 839,124.60, 1,258,686.90 and 240,105.30 is: 360,157.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,124.60 : 1,258,686.90 = 240,105.30 : x
  2. Step 2: Convert to fraction form
    839,124.60/1,258,686.90 = 240,105.30/x
  3. Step 3: Cross multiply
    839,124.60x = 1,258,686.90 × 240,105.30
  4. Step 4: Simplify right side
    839,124.60x = 302,217,395,730.57
  5. Step 5: Solve for x
    x = 302,217,395,730.57/839,124.60
  6. Step 6: Final answer
    x = 360,157.95

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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.