Home / 753,670.90-1,130,506.35-280,258.30

Finding the Fourth Proportional to 753,670.90, 1,130,506.35 and 280,258.30

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Solution

The fourth proportional to 753,670.90, 1,130,506.35 and 280,258.30 is: 420,387.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,670.90 : 1,130,506.35 = 280,258.30 : x
  2. Step 2: Convert to fraction form
    753,670.90/1,130,506.35 = 280,258.30/x
  3. Step 3: Cross multiply
    753,670.90x = 1,130,506.35 × 280,258.30
  4. Step 4: Simplify right side
    753,670.90x = 316,833,787,790.21
  5. Step 5: Solve for x
    x = 316,833,787,790.21/753,670.90
  6. Step 6: Final answer
    x = 420,387.45

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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.