Home / 847,986.30-1,271,979.45-287,020.80

Finding the Fourth Proportional to 847,986.30, 1,271,979.45 and 287,020.80

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Solution

The fourth proportional to 847,986.30, 1,271,979.45 and 287,020.80 is: 430,531.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,986.30 : 1,271,979.45 = 287,020.80 : x
  2. Step 2: Convert to fraction form
    847,986.30/1,271,979.45 = 287,020.80/x
  3. Step 3: Cross multiply
    847,986.30x = 1,271,979.45 × 287,020.80
  4. Step 4: Simplify right side
    847,986.30x = 365,084,559,322.56
  5. Step 5: Solve for x
    x = 365,084,559,322.56/847,986.30
  6. Step 6: Final answer
    x = 430,531.20

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Double scale
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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.