Home / 804,986.40-1,207,479.60-385,082.40

Finding the Fourth Proportional to 804,986.40, 1,207,479.60 and 385,082.40

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Solution

The fourth proportional to 804,986.40, 1,207,479.60 and 385,082.40 is: 577,623.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,986.40 : 1,207,479.60 = 385,082.40 : x
  2. Step 2: Convert to fraction form
    804,986.40/1,207,479.60 = 385,082.40/x
  3. Step 3: Cross multiply
    804,986.40x = 1,207,479.60 × 385,082.40
  4. Step 4: Simplify right side
    804,986.40x = 464,979,142,319.04
  5. Step 5: Solve for x
    x = 464,979,142,319.04/804,986.40
  6. Step 6: Final answer
    x = 577,623.60

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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.