Home / 819,059.72-1,229,143.16-286,585.36

Finding the Fourth Proportional to 819,059.72, 1,229,143.16 and 286,585.36

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Solution

The fourth proportional to 819,059.72, 1,229,143.16 and 286,585.36 is: 430,071.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,059.72 : 1,229,143.16 = 286,585.36 : x
  2. Step 2: Convert to fraction form
    819,059.72/1,229,143.16 = 286,585.36/x
  3. Step 3: Cross multiply
    819,059.72x = 1,229,143.16 × 286,585.36
  4. Step 4: Simplify right side
    819,059.72x = 352,254,432,643.74
  5. Step 5: Solve for x
    x = 352,254,432,643.74/819,059.72
  6. Step 6: Final answer
    x = 430,071.73

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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.